Sun Run-Xia, Luo Xiao-Jun, Tan Xiao-Xin, Tang Bin, Li Zong-Rui, Mai Bi-Xian
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, People's Republic of China.
Mar Pollut Bull. 2015 Apr 15;93(1-2):61-7. doi: 10.1016/j.marpolbul.2015.02.014. Epub 2015 Mar 11.
Dichlorodiphenyltrichloroethane and its metabolites (DDTs), hexachlorocyclohexanes (HCHs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), dechlorane plus (DP), 2,3,5,6-tetrabromo-p-xylene (pTBX) and pentabromotoluene (PBT) were measured in baby croaker (Collichthys lucidus) and mullet (Osteomugil ophuyseni) collected in 2005 and 2013 from the Pearl River Estuary. DDTs, HCHs, PCBs, and PBDEs were detected in two fish species at concentrations of 150-8100, 1.4-120, 22-560, 2.2-280 ng/g lipid wt., respectively. The levels of these chemicals were significantly lower in 2013 than in 2005. The compositions for DDTs, HCHs, and PBDEs in 2013 differed from those in 2005, indicating source changes between the two sampling periods. DP, pTBX and PBT were detected at concentrations of ND-130 ng/g lipid wt. No clear temporal trends were found for these contaminants. Overall, these results indicated the effectiveness of regulations and source controls in substantively reducing inputs of these contaminants to the Pearl River Estuary.
2005年和2013年从珠江口采集的小黄鱼（Collichthys lucidus）和鲻鱼（Osteomugil ophuyseni）中测定了滴滴涕及其代谢物（DDTs）、六氯环己烷（HCHs）、多氯联苯（PCBs）、多溴二苯醚（PBDEs）、十氯酮（DP）、2,3,5,6-四溴对二甲苯（pTBX）和五溴甲苯（PBT）。两种鱼类中均检测到DDTs、HCHs、PCBs和PBDEs，其浓度分别为150 - 8100、1.4 - 120、22 - 560、2.2 - 280 ng/g脂重。2013年这些化学物质的含量显著低于2005年。2013年DDTs、HCHs和PBDEs的组成与2005年不同，表明两个采样期之间来源发生了变化。检测到DP、pTBX和PBT的浓度为ND - 130 ng/g脂重。未发现这些污染物有明显的时间趋势。总体而言，这些结果表明了监管和源头控制在大幅减少这些污染物向珠江口输入方面的有效性。
