State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Chemosphere. 2012 Oct;89(4):458-66. doi: 10.1016/j.chemosphere.2012.05.099. Epub 2012 Jun 30.
In the present study were two favorite edible fish species for local residents, i.e., mandarin fish and crawfish, collected from the Shanghai market and analyzed for selected organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), hexabromocyclododecane (HBCDD), polybrominated diphenyl ethers (PBDEs) and methoxylated PBDEs (MeO-PBDEs). Efforts were also made to identify the potential sources of these contaminants. Comparable concentrations of hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs) and HBCDD were found in muscle tissue of mandarin fish from Guangdong (GDF), the Pearl River Delta and from Taihu Lake (TLF), the Yangtze River Delta. Levels of chlordanes, PCBs and PBDEs were about one magnitude lower in TLF compared to GDF. The concentrations of OCPs in the butter-like gland of the crawfish (CFB) were 2-5 times of those in the crawfish muscle (CFM) while concentrations of PCBs, PBDEs and MeO-PBDEs were comparable. The different patterns and levels of chlorinated and brominated organohalogen contaminants seen in mandarin fish from GDF and TLF indicates that different types of chemicals might be used in the two delta regions. The present study also shows a good correlation between the concentrations of hexachlorobenzene (HCB) and pentachloroanisol (PCA) in fish for the first time. Fish consumption limits based on chemical contaminants with non-carcinogenic effects were calculated. The estimated maximum daily consumption limit for GDF, TLF, CFM and CFB were 1.5, 2.6, 3.7 and 0.08 kg, respectively, indicating no significant risk regarding the persistent organic pollutants measured in the present study.
本研究选取了两种当地居民喜爱的食用鱼类，即鳜鱼和小龙虾，从上海市场采集并分析了选定的有机氯农药（OCPs）、多氯联苯（PCBs）、六溴环十二烷（HBCDD）、多溴二苯醚（PBDEs）和甲氧基 PBDEs（MeO-PBDEs）。本研究还努力确定了这些污染物的潜在来源。广东（GDF）、珠江三角洲和太湖（TLF）、长江三角洲的鳜鱼肌肉组织中发现了相当浓度的六氯环己烷（HCHs）、滴滴涕（DDTs）和 HBCDD。与 GDF 相比，TLF 中氯丹、PCBs 和 PBDEs 的水平低一个数量级。小龙虾（CFB）的奶油状腺中 OCPs 的浓度是小龙虾肌肉（CFM）中的 2-5 倍，而 PCBs、PBDEs 和 MeO-PBDEs 的浓度相当。GDF 和 TLF 鳜鱼中氯和溴有机卤代污染物的不同模式和水平表明，这两个三角洲地区可能使用了不同类型的化学品。本研究还首次显示了 GDF 和 TLF 鱼类中六氯苯（HCB）和五氯苯甲醚（PCA）浓度之间的良好相关性。根据非致癌效应化学污染物计算了鱼类消费限量。GDF、TLF、CFM 和 CFB 的估计最大日消费限量分别为 1.5、2.6、3.7 和 0.08 千克，表明在所研究的持久性有机污染物方面没有显著风险。
