Persistent Halogenated Compounds in Waterbirds from an e-Waste Recycling Region in South China
Persistent Halogenated Compounds in Waterbirds from an e-Waste Recycling Region in South China
复制标题
华南电子垃圾回收区水鸟体内的持久性卤代化合物
DOI：
10.1021/es8018644
复制
发表时间：
2009-01-15
影响因子：
11.4
通讯作者：
Yang, Zhong-Yi
中科院分区：
文献类型：
--
作者：
Luo, Xiao-Jun;Zhang, Xiu-Lan;Yang, Zhong-Yi
从珠江三角洲电子垃圾回收区采集的5种水鸟肌肉中定量分析了持久性卤代化合物（PHCs），如二氯二苯基三氯乙烷及其代谢物（DDTs）、六氯环己烷异构体（HCHs）、多氯联苯（PCBs）、多溴联苯醚（PBDEs）、十溴二苯基乙烷（DBDPE）和多溴联苯153（PBB 153）。华南多氯联苯的浓度高达1，400，000纳克/克脂质，是占主要污染物的80%-90%的PHCs。多溴联苯醚和有机氯农药（滴滴涕和六氯环己烷的总和）在全氟氯化碳中所占比例大致相等，其浓度中值分别为37-2200纳克/克脂重和530-4300纳克/克脂重。这一污染物分布模式与其他地区开展的大多数研究所获得的分布模式不同。研究结果表明，中国池鹭体内PCBs和PBDEs的浓度高于其他大多数具有相似营养水平的鸟类。广泛的电子废物回收活动可能是鸟类样本中多氯联苯和多溴二苯醚含量升高的原因。多溴联苯153和十溴二苯乙烷的中位浓度分别为3-140纳克/克和10-176纳克/克脂重。食鱼鸟类体内经常检测到高浓度的十溴二苯乙烷，这表明这种“新型”溴化阻燃剂可能引起环境问题。此外，本研究还阐明了污染物水平和物种特定多溴二苯醚同系物模式的物种间差异。
Persistent halogenated compounds (PHCs), such as dichlorodiphenyltrichloroethane and its metabolites (DDTs), hexachlorocyclohexane isomers (HCHs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), decabromodiphenylethane (DBDPE), and polybrominated biphenyl 153 (PBB 153), were quantified in muscles of five waterbird species collected from an extensive e-waste recycling region in the Pearl River Delta, South China. PCBs, at concentrations up to 1,400,000 ng/g lipid, were the dominant contaminants contributing to 80%-90% of PHCs. PBDEs and organochlorine pesticides (sum of DDTs and HCHs) contributed approximately equally to total PHCs with median concentrations ranging from 37-2200 and 530-4300 ng/g lipid, respectively. This contaminant distribution pattern was different from those acquired by most studies conducted in other regions. The concentrations of PCBs and PBDEs in Chinese-pond heron from the present study were higher than those from most other previous studies with birds having similar trophic levels. The extensive e-waste recycling activities were probably the cause of the elevated PCB and PBDE levels in the bird samples. The median concentrations of PBB 153 and DBDPE ranged from 3-140 and 10-176 ng/g lipid, respectively. The frequent detection and high concentrations of DBDPE in piscivorous birds implicate a potential environmental concern for this "new" brominated flame retardant. Additionally, the interspecies differences in the levels of contaminants and species-specific PBDE congener patterns were also elucidated in the present study.