摘要
以黄河入海口为研究区域,分别在地表水、沉积物、浮游生物以及12种水生生物中检测OPEs含量,结果发现共检出17种OPEs,其中氯代类检出丰度和检出频率最高,是主要的污染物成分,其次是烷基类和芳香类OPEs.同源性分析发现,在地表水与沉积物中氯代类的OPEs污染来源更为广泛.12种水生生物中较高营养级的野生鱼类(如鲢鱼、鲫鱼、梭鱼等)中∑OPEs含量高于低营养级的底栖生物(如日本沼虾等),表明OPEs在水生生物食物链上具有累积性特征,以及物种差异性特征.相比于鳃吸收,肠道摄食是野生鱼类OPEs污染的主要暴露途径.结果显示部分OPEs在黄河入海口的水生食物网中存在一定的生物蓄积和生物放大潜力.风险分析结果表明磷酸三(1,3-二氯异丙基)酯具有潜在的生态风险,需引起广泛关注.
Organophosphate esters(OPEs),as a widely used commercial chemical,have been found in various environmental media and show persistence and multiple toxicity.In this study,the Yellow River estuary was selected as the research area,and a total of 17 OPEs were detected in surface water,sediment,plankton,and 12 types of aquatic organisms.Among them,chlorinated-OPEs had the highest detection abundance and frequency,which were the main pollutant components,followed by alkyl-and aryl-OPEs.Pollution sources of chlorinated-OPEs were more extensive in the homology analysis of OPEs in surface water and sediment.And the concentrations of∑OPEs in wild fish with higher trophic level(such as Hypophthalmichthys molitrix,Carassius auratus,Sphyraenus,etc.)were higher than those in benthos with lower trophic level(such as Macrobrachium nipponense,etc.)among 12 aquatic organisms,indicating that the distribution of OPEs in aquatic food chain was bioaccumulative and species specificity.In addition,compared to gill absorption in fish,intestinal feeding was the main exposure pathway for OPEs pollution in wild fish.It was further found that some OPEs showed certain bioaccumulation and biomagnification potential in the aquatic food web from the Yellow River estuary.Tri(1,3-dichloroisopropyl)phosphate existed potential low ecological risks,to which should be paid more attention.The research results provide a scientific and reasonable theoretical basis for the risk management of emerging contaminant(OPEs)in the future.
作者
闫振飞
冯承莲
王锦东
吴丰昌
白英臣
YAN Zhen-fei;FENG Cheng-lian;WANG Jin-dong;WU Feng-chang;BAI Ying-chen(State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;College of Environment,Hohai University,Nanjing 210024,China)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2024年第1期449-461,共13页
China Environmental Science
基金
国家重点研发计划项目(2021YFC3200104)
国家自然科学基金项目(42277274)
江苏省研究生科研实践创新项目(422003256)。
