摘要
探究了7种邻苯二甲酸酯(PAEs)和13种新型增塑剂(APs)在广东清远某废弃电子垃圾拆解区水生生物和北江段淡水鱼中的累积与食物链传递特征.结果表明,废弃电子垃圾拆解区水生生物和北江段淡水鱼体内PAEs总浓度分别为20~974ng/g ww和264~370ng/g ww,以邻苯二甲酸二丁酯和邻苯二甲酸二(2-乙基己基)酯为主要污染物;APs总浓度分别为1.25~181ng/g ww和27~62ng/g ww,以对苯二甲酸二乙基己酯为首要污染物.电子垃圾拆解区各水生生物中PAEs和APs的浓度和组成差异显著,与其食性、生长阶段和代谢能力紧密相关.北江段鲮鱼和罗非鱼间无明显的种间差异,主要与其具有相似的栖息环境、摄食行为和脂肪含量有关.邻苯二甲酸二甲酯的湿重浓度和脂重浓度均与氮稳定同位素值(δ^(15)N)呈显著正相关,其营养级放大因子(TMF)分别为1.65和1.88.此外,邻苯二甲酸二苯酯的脂重浓度与δ^(15)N呈显著正相关,TMF为1.91.
In this study,7 phthalate esters(PAEs)and 13 alternative plasticizers(APs)in aquatic organisms from the disused e-waste dismantling site and freshwater fish in the Beijiang River in Qingyuan City,Guangdong Province were detected to investigate their bioaccumulation and trophic transfer.The total concentrations of PAEs and APs in aquatic organisms from the disused e-waste dismantling site and freshwater fish in the Beijiang River were 20~974ng/g ww and 1.25~181ng/g ww,264~370ng/g ww and 27~62ng/g ww,respectively.Di-butyl phthalate and di-(2-ethylhexyl)phthalate were dominant PAE pollutants,while bis(2-ethylhexyl)terephthalate was predominant AP pollutant.The concentrations and compositions of PAEs and APs significantly varied among different aquatic organisms in the e-waste dismantling site,which were closely related to their different feeding habits,growth stages,and metabolic capacity.There is no significant difference between the mud carp and tilapia in the Beijiang River,which were mainly related to their similar habitat environment,feeding behaviour,and lipid content.Both the concentrations based on wet weight and lipid weight for dimethyl phthalate were significantly and positively correlated with nitrogen isotope(δ^(15)N)values,and trophic magnification factors(TMF)were 1.65 and 1.88,respectively.In addition,the concentration based on lipid weight for diphenyl phthalate was significantly and positively correlated withδ^(15)N values,and TMF was 1.91.
作者
刘银娥
罗孝俊
黄晨晨
王璐
麦碧娴
LIU Yin-e;LUO Xiao-jun;HUANG Chen-chen;WANG Lu;MAI Bi-xian(China University of Mining&Technology,School of Environmental Science&Spatial Informatics,Xuzhou 221116,China;State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2024年第8期4674-4682,共9页
China Environmental Science
基金
国家自然科学基金资助项目(42207251,U23A2056,42277267,42161160306,42321003)
广东省科技项目(2023B1212060049)。
