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Detection of phthalates migration from disposable tablewares to drinking water using hexafluoroisopropanol-induced catanionic surfactant coacervate extraction 被引量:5
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作者 Cao Li Jia Xu +1 位作者 Dan Chen Yuxiu Xiao 《Journal of Pharmaceutical Analysis》 SCIE CAS 2016年第5期292-299,共8页
Hexafluoroisopropanol(HFIP)-induced sodium dodecyl sulfate/dodecyltrimethylammonium bromide(SDS/DTAB) catanionic surfactant coacervate extraction method coupled with high performance liquid chromatography(HPLC) was us... Hexafluoroisopropanol(HFIP)-induced sodium dodecyl sulfate/dodecyltrimethylammonium bromide(SDS/DTAB) catanionic surfactant coacervate extraction method coupled with high performance liquid chromatography(HPLC) was used to detect the migration of phthalates from disposable tablewares to drinking water. The concentration factors are larger than 82 and extraction recoveries over 53% for water samples spiked with 100 or 200 ng/m L phthalates. Limit of detection is in the range of 1.0–2.6 ng/m L.Good linearity with correlation coefficients larger than 0.9985 is obtained in the concentration of20–1500 or 40–3000 ng/m L. Relative recoveries are from 82.4% to 123.6% for water samples spiked with30/60, 250/500, and 1500/3000 ng/m L phthalates, respectively. Relative standard deviations(RSDs) are0.4%–7.4% for intraday precision(n = 5) and 0.6%–7.8% for interday precision(n = 3). Four of studied phthalates are found in the drinking water samples prepared from four kinds of tablewares. 展开更多
关键词 phthalates MIGRATION DISPOSABLE tableware HFIP-induced SDS/DTAB COACERVATE EXTRACTION HPLC
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Preparation of polypyrrole/nanosilica composite for solid-phase microextraction of bisphenol and phthalates migrated from containers to eye drops and injection solutions 被引量:2
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作者 Mehdi Ansari Dogaheh Mansoureh Behzadi 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2019年第3期185-192,共8页
This paper describes the electrodeposition of polyphosphate-doped polypyrrole/nanosilica nano-composite coating on steel wire for direct solid-phase microextraction of bisphenol A and five phthalates. We optimized inf... This paper describes the electrodeposition of polyphosphate-doped polypyrrole/nanosilica nano-composite coating on steel wire for direct solid-phase microextraction of bisphenol A and five phthalates. We optimized influencing parameters on the extraction efficiency and morphology of the nanocomposite such as deposition potential, concentration of pyrrole and polyphosphate, deposition time and the nanosilica amount. Under the optimized conditions, characterization of the nanocomposite was inves-tigated by scanning electron microscopy and Fourier transform infra-red spectroscopy. Also, the factors related to the solid-phase microextraction method including desorption temperature and time, extrac-tion temperature and time, ionic strength and pH were studied in detail. Subsequently, the proposed method was validated by gas chromatography-mass spectrometry by thermal desorption and acceptable figures of merit were obtained. The linearity of the calibration curves was between 0.01 and 50 ng/mL with acceptable correlation coefficients (0.9956-0.9987) and limits of detection were in the range 0.002-0.01 ng/mL. Relative standard deviations in terms of intra-day and inter-day by five replicate analyses from aqueous solutions containing 0.1 ng/mL of target analytes were in the range 3.3%-5.4% and 5%-7.1%, respectively. Fiber-to-fiber reproducibilities were measured for three different fibers prepared in the same conditions and the results were between 7.3% and 9.8%. Also, extraction recoveries at two different concentrations were ≥96%. Finally, the suitability of the proposed method was demonstrated through its application to the analysis of some eye drops and injection solutions. 展开更多
关键词 SOLID-PHASE MICROEXTRACTION Gas chromatography-mass spectrometry Polyphosphate-doped POLYPYRROLE NANOSILICA phthalates BisphenolA
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Presence of phthalates in gastrointestinal medications: Is there a hidden danger? 被引量:2
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作者 Zane R Gallinger Geoffrey C Nguyen 《World Journal of Gastroenterology》 SCIE CAS 2013年第41期7042-7047,共6页
Pharmaceutical companies that produce gastrointestinal(GI)medications often utilize phthalates for their ability to localize medication release.Commonly prescribed GI medications that may utilize phthalates are 5-Amin... Pharmaceutical companies that produce gastrointestinal(GI)medications often utilize phthalates for their ability to localize medication release.Commonly prescribed GI medications that may utilize phthalates are 5-Aminosalicylates,proton pump inhibitors,and pancreatic enzymes.Our understanding of the cumulative health effects of phthalates from medications remains unclear,and there is increasing evidence that phthalates are not harmless.Experimental studies in animals have shown that phthalates,specifically dibutyl phthalate and Di-(2-ethyl-hexyl)phthalate,have the potential to alter and/or inhibit reproductive biology and in utero development.Despite the lack of definitive human data,many cohort and cross-sectional studies demonstrate concerning associations between phthalates and poor health status,specifically developmental problems.Longitudinal studies and studies with larger sample sizes are required to determine whether phthalates actually cause negative health consequences.It is also important that physicians regularly review and discuss with patients the medicinal ingredients in their medications and supplements,specifically in pregnant woman with inflammatory bowel disease. 展开更多
关键词 phthalates Dibutyl PHTHALATE 5-Aminosalicylates MEDICATIONS Development Pregnancy
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Ovarian Toxicity and Epigenetic Mechanisms of Phthalates and Their Metabolites 被引量:1
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作者 Hua-hua JIANG Yao-yao DU Yu-feng LI 《Current Medical Science》 SCIE CAS 2021年第2期236-249,共14页
Ovary plays an important role in the female reproductive system.The maintenance and regulation of ovarian function are affected by various physical and chemical factors.With the development of industrialization,enviro... Ovary plays an important role in the female reproductive system.The maintenance and regulation of ovarian function are affected by various physical and chemical factors.With the development of industrialization,environmental pollutants have caused great harm to public health.Phthalates,as a class of endocrine-disrupting chemicals(EDCs),are synthesized and used in large quantities as plasticizers due to their chemical properties.They are easily released into environment because of their noncovalent interactions with substances,causing human exposure and possibly impairing ovary.In recent years,more and more attention has been paid to the role of epigenetics in the occurrence and development of diseases.And it is urgent to study the role of methylation,gene imprinting,miRNA,and other epigenetic mechanisms in reproductive toxicology. 展开更多
关键词 EPIGENETICS METHYLATION MIRNAS ovarian toxicity phthalates reproductive health
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2D-and 3D-QSBR Studies on the Relationship between Structure and Biodegradability of Phthalates 被引量:1
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作者 韩香云 石佳奇 陈天明 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第8期1109-1116,共8页
Nine phthalates were calculated at the B3LYP/6-311G** level using DFT method. The corresponding linear relationship equations (R2 were 0.853 and 0.936 respectively) for the biodegradation rate (Kb) and half-life... Nine phthalates were calculated at the B3LYP/6-311G** level using DFT method. The corresponding linear relationship equations (R2 were 0.853 and 0.936 respectively) for the biodegradation rate (Kb) and half-life time (h/2) of biodegradation were obtained with the structural parameters as theoretical descriptors. Furthermore, CoMFA method was also applied to establish 3D models which revealed the fields influencing these properties. The relationship between the properties and the structure was obtained. The correlation coefficients of the models were 0.992 and 0.999, respectively. Analyses of 2D and 3D models demonstrated that the molecular volume was an important factor affecting the biodegradability of these compounds. 展开更多
关键词 phthalates BIODEGRADABILITY density functional theory comparative molecular field analysis
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Phthalates in Commercial Chinese Rice Wines: Concentrations and the Cumulative Risk Assessment to Adult Males in Shanghai 被引量:1
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作者 HUANG Yue LU Wen Wei +3 位作者 CHEN Bo YOU Jie WU Min LI Shu Guang 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2014年第10期819-823,共5页
The concentrations of 16 phthalates in 164 commercial Chinese rice wines (CRW) were detected by GC-MS, and consumption data on CRW in different packaging types was investigated from 634 adult males in Shanghai using... The concentrations of 16 phthalates in 164 commercial Chinese rice wines (CRW) were detected by GC-MS, and consumption data on CRW in different packaging types was investigated from 634 adult males in Shanghai using a food frequency questionnaire. Based on the prinq:iples of probabilistic modelling and cumulative risk assessment, the exposure and health risk of phthalates from CRW to adult males in Shanghai was evaluated. DMP, DEP, DIBP, DnBP, BBP, and DEHP were detected in the samples, thE: range of detection frequency of individual phthalates varied from 6.10% for BBP to 15.24% for DIBP, and the detected concentrations were 51.06-200.34 ng/mL. All the respondents consumed CRW, 90.69% of them consumed CRW 0.01-49.9 mL/d, the minimum value of the average daily intake of CRW was 6.25 mL/d, the median was 13.72 mL/d and the maximum was 300 mL/d. The median exposure level of the 6 detected Phthalates to adult males in Shanghai were 6.58-7.10 ng/(d.kg), and the maximum exposure level were 137.38-540.47 ng/(d.kg). The cumulative exposure health risk index (HI) based on the median and maximum exposure level of the 6 Phthalates (DMP, I~)EP, DIBP, DnBP, BBP, and DEHP) were 0.001147 ancl 0.063396, both were far less than 1. In conclusion, CRW were generally consumed by the adult males in Shanghai. 展开更多
关键词 phthalates in Commercial Chinese Rice Wines Concentrations and the Cumulative Risk Assessment to Adult Males in Shanghai DEHP
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High Performance Liquid Chromatographic Identification and Estimation of Phthalates in Sewer Waste and a Receiving River in Ibadan City, Southwestern Nigeria
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作者 Gregory O. Adewuyi 《Journal of Water Resource and Protection》 2012年第10期851-858,共8页
Medical wastes have been implicated in river pollution in developing countries and most often people depend on water from such rivers for sources of livelihood. Phthalates (endocrine disruptors) are major components i... Medical wastes have been implicated in river pollution in developing countries and most often people depend on water from such rivers for sources of livelihood. Phthalates (endocrine disruptors) are major components in medical wastes and are commonly found contaminants in aquatic environment. Most sewage treatment facilities handling medical waste are inefficient due to overuse and poor maintenance and discharge directly into rivers. This study aimed to investigate the identity and estimates the concentration of phthalates in supposed treated medical wastes from a hospital sewer and water from a receiving river. Samples were randomly collected before and after treatment by the sewer plants, while samples were randomly collected along the course of the river starting from point of discharge. Control samples were taken from upstream about 500 m along the river course. The samples were extracted by liquid-liquid chroma- tographic process using dichloromethane, after which they were cleaned up in a column of silica gel using hexane as the mobile solvent. The cleaned extracts were analyzed by HPLC. The concentrations (μg/L) of dimethyl-, diethyl-, diphenyl-, dibutyl- and di-(2-ethyl)hexyl phthalates ranged from 62.81 ± 18.53;4.74 ± 3.57;2.05 ± 1.80;11.40 ± 5.58 to 141.92 ± 35.8 respectively in the sewer waste. The receiving river had a concentration (μg/L) of 9.17 ± 14.02;0.18 ± 0.31;0.48 ± 0.84;2.84 ± 1.21;61.72 ± 38.35 respectively for dimethyl-, diethyl-, diphenyl-, dibutyl- and di-(2-ethyl) hexyl phthalates. These concentrations were higher than control and far exceeded the USEPA limits of 3 μg/l recom- mended for phthalates in water. Contaminants of aquatic environment by untreated wastes from hospitals has serious implications on public health and environment as human risks for phthalate esters downstream are high and this calls for urgent need to develop strategy to build incentives for compliance in treatment and discharge of wastes into river waters. 展开更多
关键词 SEWAGE Treatment phthalates LIQUID-LIQUID Extraction CLEAN-UP Effluent Toxicity
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Sorption and desorption kinetics of phthalates and phenol on water/sediment interface 被引量:1
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作者 Ye Changming, Zhao Wushan, Li Tie, Lei Zhifang, Yan Hai Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1997年第3期84-91,共8页
The sorption and desorption kinetics of dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP) and phenol on water and sediment interface were studied using two compartment model in this paper. ... The sorption and desorption kinetics of dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP) and phenol on water and sediment interface were studied using two compartment model in this paper. The results showed that the sorption coefficients of DMP, DEP, DBP and phenol measured by batch equilibrium method were 16.79, 24.55, 132 and 0.65μg 1-1/n · g -1 · ml -1/n , the sorption and desorption kinetic constants of DMP, DEP, DBP, phenol were 0.0248, 0.0357, 0.0727, 0.014ml·cm -2 ·h -1 and 0.000512, 0.000754, 0.00127, 0 000899h -1 at static condition respectively; and the sorption and desorption kinetics constants of above chemicals were 0 279, 0.382, 0.496, 0.0904ml·cm -2 ·h -1 and 0.0442, 0.0031, 0.00116, 0.00247h -1 at flow water condition respectively. 展开更多
关键词 sorption desorption kinetics phthalate esters PHENOL two compartment model.
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Toxic Effects of Phthalates on Ocean Algae 被引量:1
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作者 邱海源 王宪 《Marine Science Bulletin》 CAS 2005年第2期91-96,共6页
This article discusses the interaction of phthalates and ocean algae based on the standard appraisal method of chemical medicine for algae toxicity. Through the experiments on the toxic effects of dimethyl (o-) phthal... This article discusses the interaction of phthalates and ocean algae based on the standard appraisal method of chemical medicine for algae toxicity. Through the experiments on the toxic effects of dimethyl (o-) phthalate (DMP), diethyl (o-) phthalate (DEP), dibutyl (o-) phthalate (DBP) on ocean algae, the 50 % lethal concentration of the three substances in 48 h and 96 h for plaeodectylum tricornutum, platymonas sp, isochrysis galbana, and skeletonema costatum is obtained. Tolerance limits of the above ocean algae of DMP, DEP, and DBP are discussed. 展开更多
关键词 toxic effect ocean algae PHTHALATE
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Validated Method for the Detection of Three Phthalates Derived from Marine Invertebrates
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作者 D. Avisar A. Kaplan +3 位作者 G. Ronen-Eliraz G. Vered N. Shenkar I. Gozlan 《American Journal of Analytical Chemistry》 2019年第10期445-458,共14页
This study represents, detailly, the validated method for the extraction and quantification of widespread phthalic acid esters (PAEs) bis(2-ethylhexyl) phthalate (DEHP), di-n-butyl phthalate (DBP) and di-n-octyl phtha... This study represents, detailly, the validated method for the extraction and quantification of widespread phthalic acid esters (PAEs) bis(2-ethylhexyl) phthalate (DEHP), di-n-butyl phthalate (DBP) and di-n-octyl phthalate (DnOP) from solitary ascidians collected from a marine environment. The extraction was based on a pressurized liquid extraction method, using n-hexane as the solvent to extract the target PAEs from dry biological tissues, and was performed in an accelerated solvent extraction instrument. The average recovery of 89.2% was obtained from samples subjected to a pressure of ~1500 psi and 120°C in two 10-min cycles. GC-MS was used for quantification, conducted in single-ion monitoring mode. Following careful and rigorous cleanup procedures to prevent cross-contamination from laboratory glassware, PAE standards showed signals with good specificity. The obtained limits of detection were 130, 122 and 89 ng/g for DEHP, DBP and DnOP, respectively. Accordingly, the calculated limits of quantification were 394, 370 and 270 ng/g for DEHP, DBP and DnOP, respectively. The obtained linearity ranged from 5.4 to 269 ng/ml (equivalent to 135 - 6725 ng/g dry weight), with R2 ≥ 0.998. Concentrations in the range of 200 to 9000 and 400 to 5000 ng/g sample dry weight, for DEHP and DBP, respectively, were obtained from the ascidians. No DnOP was detected in any of the samples. These results indicate that the method presented in this study is applicable for detection of low and trace concentrations of the target PAEs in samples collected from a marine organism, which can serve as a bioindicator of plastic contamination. 展开更多
关键词 PHTHALATE Plastic CONTAMINATION BIOINDICATOR GC-MS ASE Marine INVERTEBRATE
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Association of Multiple Urinary Phthalates Metabolites with Diabetes Risk in Elderly Population
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作者 Yue Wang Jiaoyang Chen +7 位作者 Jingang Shi Zhixin Zhao Jiamei Chen Ye Deng Tianyun Wang Yuting Wang Yuting Xiang Miao He 《Environment & Health》 2024年第3期140-149,共10页
As a common environmental endocrine disruptor,phthalate exposure could affect the diabetes risk.However,it remains unclear whether phthalate exposure in the elderly population alters diabetes risk.We conducted a cross... As a common environmental endocrine disruptor,phthalate exposure could affect the diabetes risk.However,it remains unclear whether phthalate exposure in the elderly population alters diabetes risk.We conducted a cross-sectional survey to explore the effect of urinary phthalate metabolites on diabetes in the elderly.We conducted a health survey of 200 elderly in northeastern China and measured urinary concentrations of 64 phthalate metabolites.We next evaluated the association between major phthalates and phthalate mixtures and diabetes in the elderly.The least absolute shrinkage and selection operator(LASSO)regression screened for mono(3-carboxypropyl)phthalate(MCPP),monoethyl phthalate(MEP),and mono(2-ethyl-5-hydroxyhexyl)phthalate(MEHHP)as important predictors for diabetes.Weighted quantile sum(WQS)regression and Bayesian Kernel Machine regression(BKMR)models consistently found MEHHP(Weights=51.9%,PIP=0.97)to have the greatest effect on diabetes risk in the elderly.Furthermore,MEHHP was associated with an increased risk of diabetes in the multipollutant logistic regression model(OR=2.148,95%CI:1.255 to 3.677).The overall effect of coexposure to MCPP,MEHHP,and MEP on the risk of diabetes in elderly population was significant and positive.In summary,we found that increased urinary MEHHP levels could increase the risk of diabetes in the elderly population.Co-exposure to MCPP,MEHHP and MEP may increase the risk of diabetes. 展开更多
关键词 DIABETES PHTHALATE MEHHP elderly population coexposure
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Characteristics and health risks of population exposure to phthalates via the use of face towels 被引量:1
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作者 Wenhui Zhang Na Zheng +7 位作者 Sujing Wang Siyu Sun Qirui An Xiaoqian Li Zimeng Li Yining Ji Yunyang Li Jiamin Pan 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2023年第8期1-13,共13页
The production of face towels is growing at an annual rate of about 4%in China,reaching 1.13 million tons by 2021.Phthalates(PAEs)are widely used in textiles,and face towels,as an important household textile,may expos... The production of face towels is growing at an annual rate of about 4%in China,reaching 1.13 million tons by 2021.Phthalates(PAEs)are widely used in textiles,and face towels,as an important household textile,may expose people to PAEs via the skin,further leading to health risks.We collected new face towels and analyzed the distribution characterization of PAEs in them.The changes of PAEs were explored in a face towel use experiment and a simulated laundry experiment.Based on the use of face towels by 24 volunteers,we calculated the estimated daily intake(EDI)and comprehensively assessed the hazard quotient(HQ),hazard index(HI),and dermal cancer risk(DCR)of PAEs exposure in the population.PAEs were present in new face towels at total concentrations of<MDL–2388 ng/g,with a median of 173.2 ng/g,which was a lower contamination level compared with other textiles.PAE contents in used face towels were significantly higher than in new face towels.The concentrations of PAEs in coral velvet were significantly higher than those in cotton.Water washing removed some PAEs,while detergent washing increased the PAE content on face towels.Gender,weight,use time,and material were the main factors affecting EDI.The HQ and HIwere less than 1,which proved PAEs had no significant non-carcinogenic health risks.Among the five target PAEs studied,DEHPwas the only carcinogenic PAE andmay cause potential health risks after long-term exposure.Therefore,we should pay more attention to DEHP. 展开更多
关键词 Face towels phthalates Dermal exposure Estimated daily intake Risk assessment
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Cooperation between Pt and Ru on RuPt/AC bimetallic catalyst in the hydrogenation of phthalates 被引量:3
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作者 Yan Xu Chenguang Wu +4 位作者 Yan Wang Ying Zhang Han Sun Haijun Chen Yujun Zhao 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第1期516-520,共5页
RuPt/AC bimetallic catalysts were pre pared by two-step incipient impregnation method and evaluated in the hydrogenation of phthalates.According to the characterization results,well dispersed Ru Pt bimetallic nanopart... RuPt/AC bimetallic catalysts were pre pared by two-step incipient impregnation method and evaluated in the hydrogenation of phthalates.According to the characterization results,well dispersed Ru Pt bimetallic nanoparticles were formed on the catalyst,and the strong interaction between the two metals resulted in the formation of RuPt alloy.It was found that Ru can donate electrons to Pt on RuPt alloy nanoparticles,leading to the formation of electron-deficient Ru which significantly promotes the hydrogenation rate of dioctyl phthalate and improves the selectivity of dioctyl di-2-ethylhexylcyclohexane-1,4-dicarboxylate by accelerating the further hydrogenation of intermediate products.The bimetallic RuPt catalyst also presented excellent stability and versatility in the hydrogenation of phthalates,demonstrating its prospective future in the hydrogenation of aromatic ring contained compounds. 展开更多
关键词 RU RuPt alloy Bimetallic catalyst phthalates HYDROGENATION
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Modeled exposure to phthalates via inhalation and dermal pathway in children's sleeping environment: A preliminary study and its implications 被引量:1
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作者 Zhongming Bu Cong Dong +2 位作者 Daniel Mmereki Yanghui Ye Zhu Cheng 《Building Simulation》 SCIE EI CSCD 2021年第6期1785-1794,共10页
In this study,exposure to phthalates during children’s sleeping time was evaluated based on a mechanistic model.Airborne phase-specific concentrations in this model were estimated taking into account kinetic partitio... In this study,exposure to phthalates during children’s sleeping time was evaluated based on a mechanistic model.Airborne phase-specific concentrations in this model were estimated taking into account kinetic partitioning,particle dynamics and time-varying ventilation.Exposure pathways considered were inhalation exposure to airborne phases,dermal absorption from "air-to-skin" transport and direct contact.By taking di(n-butyl)phthalate(DnBP)and bis(2-ethylhexyl)phthalate(DEHP)as two representative pollutants,inhalation exposure accounted for>90%when children wore clean pajamas before going to bed.Dermal uptake significantly increased when children's pajamas had absorbed DnBP before putting them on,whereas dermal uptake of DEHP was relatively lower and insensitive to the condition of clothing.Increasing air exchange rate at night and keeping clothes cleaner were effective for reducing children's exposures during sleeping period.Further studies are necessary taking into account source-proximity effect,particle emissions and refined dermal exposure routes. 展开更多
关键词 indoor air phthalates EXPOSURE CHILDREN sleeping environment
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N-acetylcysteine and zinc sulphate abate di-2-ethylhexyl phthalate-mediated reproductive dysfunction in rats:Focus on oxidative and sex hormone receptors mechanisms
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作者 Victor Oghenekparobo Emojevwe Mega Obukohwo Oyovwi +7 位作者 Kayode Ezekiel Adewole Peggy Ejiro Ohwin Adeniran Oluwadamilare Akinola Alexander Obidike Naiho Eze Kingsley Nwangwa Victor Omo-Idonije Motunrayo Lade-Ige Benneth Ben-Azu 《Asian pacific Journal of Reproduction》 CAS 2024年第5期228-240,共13页
Objective:To investigate the potential of N-acetylcysteine(NAC)and zinc sulphate(ZnSO_(4))in mitigating reproductive dysfunction caused by di-2-ethylhexyl phthalate(DEHP)in rats and to understand the underlying mechan... Objective:To investigate the potential of N-acetylcysteine(NAC)and zinc sulphate(ZnSO_(4))in mitigating reproductive dysfunction caused by di-2-ethylhexyl phthalate(DEHP)in rats and to understand the underlying mechanisms,specifically oxidative stress and sex hormone receptor activity.Methods:Thirty-five male Wistar rats were randomly divided into five equal groups(n=7 per group).Group 1 was administered 0.5 mL of distilled water and served as the control group.Group 2 was given only DEHP(750 mg/kg/day),while group 3,4 and 5 were given DEHP(750 mg/kg/day)plus NAC(100 mg/kg/day),DEHP(750 mg/kg/day)plus ZnSO_(4)(0.5 mg/kg/day),and DEHP(750 mg/kg/day)plus NAC(100 mg/kg/day)as well as ZnSO_(4)(0.5 mg/kg/day),respectively.All treatments lasted for 21 days.Samples were obtained after the rats were sacrificed,and hormones levels in the serum and markers of oxidative stress in the testicles were analyzed using the enzyme-linked immunosorbent assay.The amount of androgen receptors in the testicles was determined by immunohistochemistry,and the susceptibility of testosterone and DEHP to bind to androgen receptor and 5α-reductase was determined by molecular docking studies.Results:DEHP decreased reproductive hormones,testicular antioxidant enzymes,increased malondialdehyde levels,and negatively impacted histology of the pituitary and testes.NAC or ZnSO_(4) treatment showed a marked improvement in testicular antioxidant status and hormone levels,as well as a positive effect on the histology of the pituitary and testes.The combination of both treatments appeared to be more effective.The affinity of DEHP to bind to androgen receptors may lead to disruption of androgen receptor signaling,which can further result in dysfunction of hormones related to androgen.However,NAC is more likely to form stronger binding interactions with follicle stimulating hormone and luteinizing hormone receptors,as well as gonadotropin-releasing hormone receptors,when compared to DEHP.Conclusions:The possibility that NAC and ZnSO_(4) could downregulate DEHP-induced sex hormone changes is suggested by their potential to reduce toxicity. 展开更多
关键词 Di-2-ethylhexyl phthalate TESTOSTERONE Androgen receptor 5Α-REDUCTASE OESTROGEN Luteinizing hormone
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Research Progress on Distribution,Sources and Ecological Effects of Phthalate in Soil
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作者 Hengrui ZHANG Shasha LIU 《Agricultural Biotechnology》 2024年第1期28-30,共3页
Phthalate esters(PAEs)are widely used as main plasticizers in plastic products,agricultural regulators,toys,and other fields.This paper reviewed the research progress on the distribution,sources,and ecological effects... Phthalate esters(PAEs)are widely used as main plasticizers in plastic products,agricultural regulators,toys,and other fields.This paper reviewed the research progress on the distribution,sources,and ecological effects of PAEs.The effects of PAEs on soil microorganisms,animals,plants and soil properties were explored in sequence,providing effective theoretical basis for future research on PAEs. 展开更多
关键词 Phthalate ester DISTRIBUTION SOURCE Ecological effect
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Recent Advances of Sensitive Electrochemical Sensing Platforms for Rapid Detection of Phthalate Acid Esters
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作者 Xiuxiu Dong Lili Zhang +2 位作者 Meicai Ge Minfu Wu Qijian Niu 《Instrumentation》 2024年第2期9-23,共15页
As a kind of plasticizer,phthalic acid esters(PAEs)are often added to plastics to enhance elasticity,transparency,durability and prolong service life.However,it does not chemically bind to plastics and is easy to migr... As a kind of plasticizer,phthalic acid esters(PAEs)are often added to plastics to enhance elasticity,transparency,durability and prolong service life.However,it does not chemically bind to plastics and is easy to migrate to the environment.It is difficult to degrade in the environment,and it is also enriched in the human body through the food chain and respiration,which will lead to obvious adverse reactions such as decreased learning and memory function and neurobehavioral disorders.Due to the toxicity,universality and low concentration limitations of PAEs in the environment and food,it is essential to achieve rapid and sensitive detection of PAEs in soil,atmosphere,water and food.Electrochemical(EC)sensors have the advantages of simplicity,fast,low cost,portability,easy operation,high specificity and high sensitivity,so they are applied for the detection of PAEs.Although there are a large number of studies on the detection of PAEs by EC sensors,there is no review on this aspect.In this review,we introduce the detection of PAEs from classical EC sensors,electrochemiluminescence(ECL)sensors and photo-electrochemical(PEC)sensors in the past five years.This review is beneficial to understanding the construction of EC sensors and the detection mechanism of PAEs.We also propose that the development of rapid,accurate and real-time detection methods of PAEs is key to assessing risk and preventing related diseases. 展开更多
关键词 phthalate acid esters electrochemical sensor DETERMINATION
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Pollution characteristics of 15 gas- and particle-phase phthalates in indoor and outdoor air in Hangzhou 被引量:8
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作者 Xingzi Ouyang Meng Xia +1 位作者 Xueyou Shen Yu Zhan 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2019年第12期107-119,共13页
Phthalate esters(PAEs),typical pollutants widely used as plasticizers,are ubiquitous in various indoor and outdoor environments.PAEs exist in both gas and particle phases,posing risks to human health.In the present st... Phthalate esters(PAEs),typical pollutants widely used as plasticizers,are ubiquitous in various indoor and outdoor environments.PAEs exist in both gas and particle phases,posing risks to human health.In the present study,we chose four typical kinds of indoor and outdoor environments with the longest average human residence times to assess the human exposure in Hangzhou,including newly decorated residences,ordinary residences,offices and outdoor air.In order to analyze the pollution levels and characteristics of 15 gasand particle-phase PAEs in indoor and outdoor environments,air and particulate samples were collected simultaneously.The total PAEs concentrations in the four types of environments were 25,396,25,466.8,15,388.8 and 3616.2 ng/m^3,respectively.DEHP and DEP were the most abundant,and DMPP was at the lowest level.Distinct variations in the distributions of indoor/outdoor,gas/particle-phase and different molecular weights of PAEs were observed,showing that indoor environments were the main sources of PAEs pollution.While most PAEs tended to exsit in indoor sites and gas-phase,the high-molecular-weight chemicals tended to exist in the particle-phase and were mainly found in PM2.5.PAEs were more likely adsorbed by small particles,especially for the indoor environments.There existed a good correlation between the particle matter concentrations and the PAEs levels.In addition,neither temperature nor humidity had obvious effects on the distributions of the PAEs concentrations. 展开更多
关键词 Phthalate esters Indoor and outdoor air Gas and particle phase Distribution characteristics PARTICLES
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High Efficient Extraction of Phthalates in Aquatic Products by a Modified QuEChERS Method 被引量:7
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作者 WANG Wen-wen GAO Fu-kai LI Gui-zhi LIU Zhen-bo LIU Yong-ming 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2013年第4期653-656,共4页
A simple, environmentally friendly and high efficient extraction method was proposed for the determina- tion of five phthalates in aquatic products by gas chromatography combined with mass spectrometry detector (GC-M... A simple, environmentally friendly and high efficient extraction method was proposed for the determina- tion of five phthalates in aquatic products by gas chromatography combined with mass spectrometry detector (GC-MS). When this method was adopted, samples were pretreated by modified QuEChERS(quick, easy, cheap, effective, rugged and safe) method. An environmentally friendly extractant(ethanol aqueous solution) replaced toxic acetonitrile for extracting phthalates in the protein-matrix samples. Fluorescence quenching spectra of bovine serum albumin(BSA) with phthalates show that there was a high-affinity interaction between phthalate and protein, de- creasing the extraction efficiency of phthalates from fish samples. However, in the 80%(volume fraction, ~) ethanol aqueous solution, a slow but full protein denaturation takes place, which would cause the unfolding of protein and the release of phthalates. Meanwhile, the fat-soluble impurities are extracted less in ^(ethanol) 80% aqueous solution than in either ~p(ethanol) 100% or hydrophobic solvents in the liquid-liquid extraction procedure. Therefore the puri- fication steps were greatly simplified. Overall recoveries were 81.77%--90.5% with limits of detection between 2.53 and 9.61 ~tg/L, and relative standard deviation values at 1.15%---4.85%. The proposed approach was satisfactorily applied to the determination of phthalates in real aquatic products, such as fish, shrimp and oyster. 展开更多
关键词 PHTHALATE Modified quick easy cheap effective rugged and safe(QuEChERS) method Protein Aquatic product Gas chromatography-mass spectrometry-selected ion monitoring(GC-MS-SIM)
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Food emulsifier glycerin monostearate aggravates phthalates'testicular toxicity by disrupting tight junctions'barrier function in rats 被引量:1
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作者 Lingzi Xia Min Yang +4 位作者 Miao He Mingzhe Jiang Chang Qin Zhijun Wei Haitao Gao 《Food Quality and Safety》 SCIE CSCD 2021年第2期179-187,共9页
Objectives:This study aimed to investigate the effect of the widely used food emulsifier glycerin monostearate(GM)on testicular toxicity caused by the mixture of three commonly used phthalate esters(MPEs)in rats,and f... Objectives:This study aimed to investigate the effect of the widely used food emulsifier glycerin monostearate(GM)on testicular toxicity caused by the mixture of three commonly used phthalate esters(MPEs)in rats,and further to explore the underlying mechanism.Materials and Methods:Thirty male Sprague-Dawley rats were randomly divided into three groups.Rats were orally treated with 160 mg/kg/d MPEs in the MPEs group;coinstantaneously treated with 160 mg/kg/d MPEs and 200 mg/kg/d GM in the MPEs+GM group;and treated with the excipient in the control group.The intervention lasted for 5 weeks.Testis weight,epididymis weight,testicular histopathology,and serum testosterone were detected for testicular toxicity evaluation.The testicular ultrastructure,the tight junction proteins zonula occluden(ZO)-1,and claudin were measured for the mechanism exploration.Results:The body weight,epididymis,serum testosterone level,and anogenital distance in the MPEs+GM group were significantly decreased compared with control group(P<0.05);Testicular histopathological observation showed that shed spermatids were observed in the MPEs+GM group.Ultrastructural observation of testicular cells showed that the cristae number was decreased in some mitochondria in the MPEs group,whereas the cristae were fused and disappeared in most mitochondria in the MPEs+GM group.The tight junctions were broken in the MPEs+GM group;meanwhile,the expression of ZO-1 and claudin were altered in the MPEs+GM group(P<0.01).Conclusions:The results from this study indicated that GM aggravated MPEs'testicular toxicity,which might relate to the injured mitochondria and damaged tight junctions in testicular tissue. 展开更多
关键词 Glycerin monostearate butyl benzyl phthalate dibutyl phthalate di(2-ethylhexyl)phthalate male reproductive toxicity tight junction
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