文献类型：期刊文献

英文题名：Effect of exposure to decabromodiphenyl ether and tetrabromobisphenol A in combination with lead and cadmium on soil enzyme activity

作者：Yu, Yunjiang[1];Li, Liangzhong[1];Yu, Lehuan[1,2];Lin, Bigui[1];Chen, Xichao[1,3];Li, Hui[4];Han, Qian[1,5];Ge, Qingzhi[1,6];Li, Hong Yan[1]

机构：[1]Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China;[2]Guangdong Univ Educ, Biol & Food Engn Inst, Guangzhou 510303, Guangdong, Peoples R China;[3]Changzhou Univ, Sch Environm & Safety Engn, Changzhou 213000, Peoples R China;[4]East China Univ Sci & Technol, Shanghai 200237, Peoples R China;[5]Shenzhen Acad Environm Sci, Shenzhen 518001, Peoples R China;[6]Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China

年份：2017

卷号：117

起止页码：45

外文期刊名：INTERNATIONAL BIODETERIORATION & BIODEGRADATION

收录：;EI(收录号：20165003116513);WOS:【SCI-EXPANDED(收录号:WOS:000394076200007)】；

基金：This work was funded by the National Science Foundation of China (Nos.U1401233, 21377045 and 41403092) and Nature Science Foundation of Guangdong Province (No. 2015A030313897).

语种：英文

外文关键词：Combined exposure; Decabromodiphenyl ether; Tetrabromobisphenol A; Lead; Cadmium; Ecotoxicological effects

摘要：The two most widely used brominated flame retardants (BFRs), decabromodiphenyl ether (BDE209) and tetrabromobisphenol A (TBBPA), co-exist prevalently with heavy metals (HM), at e-waste recycling sites (EWRSs). The laboratory incubation we conducted, which 50 g of dried soil spiked with Pb, Cd, BDE209 and TBBPA, were incubated 180 d in the dark at 25 degrees C, and kept the soil moisture at 60%. The results demonstrated that the inhibition ratio of 4 kinds of the enzyme (catalase, dehydrogenase, polyphenol oxidase and urease) in the combined of BFRs and HMs treatments were -127%-66%, -72%-49%, -52% 76% and 54%-107% respectively, and in TBBPA or BDE209 contaminant treatments were -135%-18%, -16%-31%, -18%-15% and -17%-83% respectively. Urease was mitre sensitive to the combined contamination than catalase, dehydrogenase and Polyphenol oxidase. BDE209 exhibited a higher ecotoxicological potential to soil enzymatic activity than TBBPA. The co-existence of HM induces a stronger response of enzymatic activity to the artificial contamination. The availability of the residual fraction in the later stage of incubation, along with the results of principal component analysis demonstrated that there may be different mechanisms responsible for the generation of residual and extractable fractions of HM. (C) 2016 Elsevier Ltd. All rights reserved.