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水体中磺胺甲恶唑和甲氧苄氨嘧啶的自然光降解 被引量:5

Natural sunlight photodegradation of sulfamethazole and trimethoprim in aquatic environment
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摘要 实验研究了磺胺甲恶唑和甲氧苄氨嘧啶连续暴露于自然光下72 h,在pH值为4.0、7.0、9.0水体中的光降解行为,同时考察了黑暗条件下对照样品在不同pH条件下的稳定性.实验表明,光强、光照时间、水体pH都直接影响到磺胺甲恶唑的去除率.在自然光照环境下,不同pH溶液中的磺胺甲恶唑均易发生光降解,而黑暗对照样品去除率较小.甲氧苄氨嘧啶则比较稳定,几乎未发生降解,但黑暗对照样品在pH值为4.0和7.0的溶液中,与起始浓度相比,去除率大于10%,这可能主要与该药物在不同pH溶液中的离子形态及光照过程中的温度波动有关. In this study,natural sunlight photodegradation behavior of sulfamethoxazole and trimethoprim in aqueous solution with pH 4.0,7.0 and 9.0 for consecutive 72 h was studied,while dark controls were used to test the stability of selected drugs under the same condition.The results show that light intensity,illumination time and pH are directly responsible for the loss of sulfamethoxazole.The chemical was susceptible to photodegradation under different pH conditions,but no loss was found for dark controls.Trimethoprim was quite resistant to photodegradation,with hardly any removal.However,over 10% loss of parent compound was observed in aqueous solution with pH 4.0 and 7.0 for dark controls.It is probably related to speciation of TRM as a function of pH,combined with fluctuation of temperature during the photolysis process.
出处 《环境化学》 CAS CSCD 北大核心 2013年第6期1081-1087,共7页 Environmental Chemistry
基金 中国教育部-澳大利亚联邦科工组织联合培养博士生项目
关键词 磺胺甲恶唑 甲氧苄氨嘧啶 光降解 光照强度 温度 sulfamethoxazole trimethoprim photodegradation light intensity temperature
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参考文献21

  • 1Sarmah A K, Meyer M T, Boxall B A, et al. A global perspective on the use, sales, exposure pathways, occurrence, fate and effects of veterinary antibiotics (VAs) in the environment [ J]. Chemosphere, 2006, 65 (5) : 725-759.
  • 2Batt A L, Snow D D, Aga D S, et al. Occurrence of sulphonamide antimicrobials in private water wells in Washington County. Idaho, USA [J]. Chemosphere, 2006, 64(11): 1963-1971.
  • 3巫杨,陈东辉,SMITH Lester,KOOKANA Rai.磺胺甲恶唑和甲氧苄氨嘧啶在土壤中的好氧降解及对微生物呼吸的影响[J].环境化学,2011,30(12):2015-2021. 被引量:13
  • 4Jogensen S E, Halling-Soensen B. Drugs in the environment [ J]. Chemosphere, 2000, 40:691-699.
  • 5Ryan C C, Tan D T, Arnold W A. Direct and indirect photolysis of sulfamethoxazole and trimethoprim in wastewater treatment plant effluent [ J]. Water Research, 2011,45 (3) : 1280-1286.
  • 6Boreen A L, Arnold W A, McNeill K. Photochemical fate of sulfa drugs in the aquatic environment: Sulfa drugs containing five-membered heterocyclic groups[J]. Environmental Science and Technology, 2004, 38 (10) :3933-3940.
  • 7Trovo A G, Nogueira R F P, Aguerra A, et al. Degradation of sulfamethoxazole in water by solar photo-Fenton. Chemical and toxicological evaluation [J]. Water Research, 2009, 43:3922-3931.
  • 8Canonica S, Meunier L, von Gunten U. Phototransformation of selected pharmaceuticals during UV treatment of drinking water [ J ]. Water Research, 2008, 42 (1/2) : 121-128.
  • 9Gao J, Pedersen J A. Adsorption of sulfonamide antimicrobial agents to clay minerals [ J]. Environ Sci Technol, 2005, 39:9509-9516.
  • 10Bekci Z, Seki Y, Yurdakoc M K. Equilibrium studies for trimcthoprim adsorption on montmorillonite KSF [ J ]. Journal of Hazardous Materials, 2006, 133 : 233-242.

二级参考文献20

  • 1Sarmah A K,Meyer M T,Boxall B A,et al.A global perspective on the use,sales,exposure pathways,occurrence,fate and effects of veterinary antibiotics (VAs) in the environment[J].Chemosphere,2006,65(5):725-7.
  • 2Batt A L,Snow D D,Aga D S,et al.Occurrence of sulphonamide antimicrobials in private water wells in Washington County.Idaho,USA[J].Chemosphere,2006,64(11):1963-1971.
  • 3Diaz-Cruz M S,Lopez de alda M J,Barceclo D.Environmental behavior and analysis of veterinary and human drugs in soils,sediments and sludge[J].Trends in Analytical Chemistry,2003,22(6):340-351.
  • 4Xia K,Bhandari A,Dasc K,et al.Occurrence and fate of pharmaceuticals and personal care products (PPCPs) in biosolids[J].J Environ Qual,2005,34(1):91-104.
  • 5Baquero F,Martinez J L,Canton R.Antibiotics and antibiotic resistance in water environments[J].Current Opinion in Biotechnology,2008,19(3):260-265.
  • 6Al-Ahmad A,Daschner F D,Kumerer K.Biodegradability of cefotiam,ciprofloxacin,meropenem,penicillin G and sulfamethoxazole and inhibition of waste water bacteria[J].Arch Environ Contam Toxicol,1999,37(2):158-.
  • 7Demoling L A,Baath E,Greve G,et al.Effects of sulfamethoxazole on soil microbial communities after adding substrate[J].Soil Biology & Biochemistry,2009,41(4):840-848.
  • 8Boxall A B,Fogg L A,Blackwell P A,et al.Veterinary medicines in the environment[J].Rev Environ Contam Toxicol,2004,180,1-91.
  • 9Pfeifer T,Tuerk J,Bester K,et al.Determination of selected sulfonamides antibiotics and trimethoprim in manure by electrospray and atmospheric pressure chemical ionization tandem mass spectrometry[J].Rapid Commun.
  • 10Vienoa N,Tuhkanen T,Kronberg L.Elimination of pharmaceuticals in treatment plants in Finland[J].Water Res,2007,41(5):1001-1012.

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