The Centre for Environment, Fisheries and Aquaculture Science, Cefas Lowestoft Laboratory, Pakefield Road, Lowestoft, Suffolk NR33 0HT, UK.
Mar Pollut Bull. 2013 Apr 15;69(1-2):238-42. doi: 10.1016/j.marpolbul.2012.12.026. Epub 2013 Jan 20.
We report concentrations of organochlorine pesticides (HCB, HCHs, DDTs, dieldrin) and PCBs in the blubber of 43 common dolphins bycaught in fisheries operating off the SW coast of the UK from 1992 to 2006. Concentrations of ΣDDT (summed p,p'-DDT and its metabolites, p,p'-DDE and p,p'-TDE) and of 25 summed CB congeners ranged from 0.2 to 16.1 and 2.1 to 62.4 mg kg(-1) lipid weight, respectively. Concentrations of sum HCH, HCB and dieldrin were lower, ranging from not detected to 0.14, 0.01 to 0.27 and 0.01 to 0.73 mg kg(-1) lipid weight, respectively. All contaminants studied showed a downward time trend but only that for HCHs was statistically significant. Overall, 72% of the dolphins analysed had blubber PCB concentrations above an established toxicity threshold value.
我们报告了 1992 年至 2006 年间在英国西南部渔业中捕获的 43 头宽吻海豚的鲸脂中有机氯农药（HCB、六氯环己烷、滴滴涕、狄氏剂）和多氯联苯的浓度。ΣDDT（p,p'-滴滴涕及其代谢物 p,p'-DDE 和 p,p'-TDE 的总和）和 25 种合计量 PCB 的浓度范围分别为 0.2 至 16.1 和 2.1 至 62.4 mg kg(-1) 脂重。ΣHCH、HCB 和狄氏剂的浓度较低，范围分别为未检出至 0.14、0.01 至 0.27 和 0.01 至 0.73 mg kg(-1) 脂重。所有研究的污染物均呈下降的时间趋势，但仅 HCHs 的趋势具有统计学意义。总体而言，分析的海豚中有 72%的鲸脂 PCB 浓度超过既定的毒性阈值值。
