Allen-Gil S M, Gubala C P, Wilson R, Landers D H, Wade T L, Sericano J L, Curtis L R
Department of Fisheries and Wildlife, 104 Nash Hall, O. S. U., Corvallis, Oregon 97331, USA.
Arch Environ Contam Toxicol. 1997 Nov;33(4):378-87. doi: 10.1007/s002449900267.
Organochlorine (OC) concentrations in surface sediment, snails (Lymnea sp.), and two freshwater fish species (grayling, Thymallus arcticus; and lake trout, Salvelinus namaycush) from four lakes in the US Arctic were determined. In surface sediment, chlorinated benzenes (including hexachlorobenzene, HCB), and p,p'-DDT were the primary analytes detected (max = 0.7 ng/g dry wt), while individual polychlorinated biphenyl (PCB) congeners were always below 0.1 ng/g. A wider range of compounds and higher concentrations were found in lake trout, the top predatory fish species in the same lakes. The concentration ranges for hexachlorocyclohexanes (HCHs), chlordane-related compounds (CHLORs), DDTs, and PCBs in lake trout and grayling were similar to those reported for other arctic freshwater fish (1-100 ng/g wet wt), but one to two orders of magnitude lower than Great Lakes salmonids. Nitrogen isotope analysis confirmed that differences in OC concentrations between grayling and lake trout are explained partly by differences in food web position.
测定了美国北极地区四个湖泊表层沉积物、蜗牛（椎实螺属）以及两种淡水鱼（茴鱼，北极茴鱼；湖鳟，湖红点鲑）体内的有机氯（OC）浓度。在表层沉积物中，检测到的主要分析物为氯化苯（包括六氯苯，HCB）和p,p'-滴滴涕（最高含量为0.7纳克/克干重），而多氯联苯（PCB）各同系物的含量始终低于0.1纳克/克。在同一湖泊中的顶级掠食性鱼类湖鳟体内，发现了范围更广的化合物和更高的浓度。湖鳟和茴鱼体内六氯环己烷（HCHs）、氯丹相关化合物（CHLORs）、滴滴涕（DDTs）和多氯联苯（PCBs）的浓度范围与其他北极淡水鱼报告的浓度范围相似（1-100纳克/克湿重），但比五大湖鲑科鱼类低一到两个数量级。氮同位素分析证实，茴鱼和湖鳟体内有机氯浓度的差异部分是由食物网位置的差异造成的。
