1974年至1994年间，加拿大新斯科舍省塞布尔岛灰海豹（Halichoerus grypus）体内有机氯残留浓度及负荷的变化趋势。

Trends in organochlorine residue concentrations and burdens in grey seals (Halichoerus grypus) from Sable Is., NS, Canada, between 1974 and 1994.

作者信息

Addison R F, Stobo W T

机构信息

DFO Institute of Ocean Sciences, PO Box 6000, Sidney BC, Canada V8L 4B2.

出版信息

Environ Pollut. 2001;112(3):505-13. doi: 10.1016/s0269-7491(00)00129-9.

DOI:10.1016/s0269-7491(00)00129-9

PMID:11291457

Abstract

In blubber from maternal grey seals (Halichoerus grypus) from Sable Is., NS, sigma DDT (p,p'-DDE and p,p'-DDT) concentrations declined from 12 micrograms/g lipid in 1974 to 0.5 microgram/g in 1994. Pup blubber sigma DDT concentrations were about 60% of those of their mothers, and declined at similar rates. In maternal seals, p,p'-DDE increased from 56% sigma DDT in 1974 to 89% in 1994. Polychlorinated biphenyl concentrations did not change between 1976 and 1988, but then declined; the relative proportion of chlorobiphenyl (CB) 101 increased, and those of CBs 170 and 187 decreased between 1985 and 1991. Concentrations of alpha-hexachlorocyclohexane and trans-nonachlor declined after 1988, and of oxychlordane after 1992; concentrations of hexachlorobenzene were constant between 1984 and 1994.

摘要

来自新斯科舍省塞布尔岛的母灰海豹（Halichoerus grypus）的鲸脂中，σ-滴滴涕（p,p'-滴滴伊和p,p'-滴滴涕）浓度从1974年的12微克/克脂质降至1994年的0.5微克/克。幼崽鲸脂中σ-滴滴涕浓度约为其母亲的60%，且下降速率相似。在母海豹中，p,p'-滴滴伊占σ-滴滴涕的比例从1974年的56%增至1994年的89%。多氯联苯浓度在1976年至1988年间未变，但随后下降；1985年至1991年间，氯联苯（CB）101的相对比例增加，CB 170和CB 187的相对比例下降。1988年后，α-六氯环己烷和反式九氯的浓度下降，1992年后氧氯丹的浓度下降；1984年至1994年间，六氯苯的浓度保持不变。