Hu Guanjiu, Sun Cheng, Li Juan, Zhao Yonggang, Wang Hui, Li Yiqiang
State Key Laboratory of Pollution Control and Resource Reuse & School of the Environment, Nanjing University, 210093 Nanjing, People's Republic of China.
Ecotoxicology. 2009 Aug;18(6):647-51. doi: 10.1007/s10646-009-0341-2. Epub 2009 Jun 9.
The persistent organic pollutants of DDTs, PCBs, PAHs and HCHs accumulated in the bodies of fish and benthos taken at seven sites were measured to understand the issue of ecological health of Yangtze River at Jiangsu section. The highest levels for DDTs, the total 20 PCBs, the total 16 PAHs and HCHs in fish bodies were 0.076 microg/kg, 23.1 microg/kg, 7.44 ng/kg and 0.028 microg/kg, respectively and that in benthos bodies were 0.082 microg/kg, 14.3 microg/kg, 21.1 ng/kg and 0.026 microg/kg. The PAHs concentrations in benthos were higher than that in fish and they had a significant positive correlation (P < 0.05). Among the detectable chemicals, DDTs were 100% of p,p'-DDE isomers, the main PCBs were 4- and 5-chlorinated biphenyls in which PCB 105 had the highest detection frequency and the main PAHs were the compounds of 2-4 rings. PCBs were accumulated in fish bodies which enrichment factors were as high as 508-42,414 folds occurred at three sites. The results demonstrated that the accumulation measurements can be used to test the effects of PAHs, DDTs, PCBs and HCHs on aquatic ecological health.
对取自七个地点的鱼类和底栖生物体内积累的滴滴涕、多氯联苯、多环芳烃和六氯环己烷等持久性有机污染物进行了测量，以了解长江江苏段的生态健康问题。鱼体内滴滴涕、20种多氯联苯总量、16种多环芳烃总量和六氯环己烷的最高含量分别为0.076微克/千克、23.1微克/千克、7.44纳克/千克和0.028微克/千克，底栖生物体内的相应含量分别为0.082微克/千克、14.3微克/千克、21.1纳克/千克和0.026微克/千克。底栖生物中的多环芳烃浓度高于鱼类，且二者呈显著正相关（P<0.05）。在可检测到的化学物质中，滴滴涕100%为p,p'-滴滴伊异构体，主要的多氯联苯是4-和5-氯代联苯，其中多氯联苯105的检测频率最高，主要的多环芳烃是2-4环化合物。多氯联苯在鱼体内积累，在三个地点富集系数高达508-42414倍。结果表明，积累测量可用于测试多环芳烃、滴滴涕、多氯联苯和六氯环己烷对水生生态健康的影响。
