1977-1978 年、1990 年和 2002 年相比，密歇根湖红胸秋沙鸭卵中的有机氯进一步减少。
Further declines in organochlorines in eggs of red-breasted mergansers from Lake Michigan, 1977-1978 versus 1990 versus 2002.
机构信息
USGS Patuxent Wildlife Research Center, Beltsville, MD 20705, USA.
出版信息
Environ Monit Assess. 2009 Dec;159(1-4):163-8. doi: 10.1007/s10661-008-0619-5. Epub 2008 Oct 31.
From 1977-1978 to 1990, concentrations of polychlorinated biphenyls (PCBs) and most organochlorine pesticides declined in eggs of red-breasted mergansers (Mergus serrator) nesting on islands in northwestern Lake Michigan. Further declines took place between 1990 and 2002. Between 1977-1978 and 1990 total PCBs decreased 60% (from 21 to 8.5 microg/g, wet weight). An additional decline of 46% took place between 1990 and 2002 (8.5 to 4.6 microg/g). Between 1977-1978 and 1990 p,p (')-DDE decreased 66% (from 6.5 to 2.2 microg/g), and from 1990 to 2002 an additional decline of 36% took place (from 2.2 to 1.4 microg/g). Between 1977-1978 and 1990 dieldrin decreased only 16% (from 0.82 to 0.69 microg/g), but from 1990 to 2002 a 96% decrease occurred (from 0.69 to 0.03 microg/g).
从 1977-1978 年到 1990 年，在密歇根湖北部岛屿上筑巢的红胸秋沙鸭（Mergus serrator）的卵中，多氯联苯（PCBs）和大多数有机氯农药的浓度下降。1990 年至 2002 年期间，浓度进一步下降。从 1977-1978 年到 1990 年，总 PCB 减少了 60%（从 21 微克/克降至 8.5 微克/克，湿重）。1990 年至 2002 年期间，又减少了 46%（从 8.5 微克/克降至 4.6 微克/克）。从 1977-1978 年到 1990 年，p,p' -DDE 减少了 66%（从 6.5 微克/克降至 2.2 微克/克），而从 1990 年至 2002 年，又减少了 36%（从 2.2 微克/克降至 1.4 微克/克）。从 1977-1978 年到 1990 年，狄氏剂仅减少了 16%（从 0.82 微克/克降至 0.69 微克/克），但从 1990 年至 2002 年，减少了 96%（从 0.69 微克/克降至 0.03 微克/克）。
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