Stendell R C, Ohlendorf H M, Klaas E E, Elder J B
Pestic Monit J. 1976 Jun;10(1):7-9.
Eggs from four species of aquatic birds inhabiting waterways of the Lake St. Clair region were collected in 1973 and analyzed for mercury. Species analyzed were mallard ducks (Anas platyrhynchos), common terns (Sterna hirundo), black-crowned night herons (Nycticorax nycticorax), and great egrets (Casmerodius albus). Mallard eggs contained relatively low residue levels, less than 0.05-0.26 ppm, and common tern eggs contained the highest residues, ranging up to 1.31 ppm. Mercury levels in the eggs were appreciably lower than those in the same species in 1970. The declines are attributed to the 1970 restrictions placed on industrial discharges of mercury into the St. Clair and Detroit Rivers.
1973年，采集了生活在圣克莱尔湖地区水道的四种水鸟的蛋，并对其进行了汞含量分析。所分析的物种有绿头鸭（Anas platyrhynchos）、普通燕鸥（Sterna hirundo）、黑冠夜鹭（Nycticorax nycticorax）和大白鹭（Casmerodius albus）。绿头鸭蛋中的残留水平相对较低，低于0.05 - 0.26 ppm，普通燕鸥蛋中的残留量最高，可达1.31 ppm。这些蛋中的汞含量明显低于1970年同一物种蛋中的汞含量。汞含量的下降归因于1970年对向圣克莱尔河和底特律河排放汞的工业活动的限制。
