渤海主要重金属污染物对卤虫无节幼体的毒性

Toxicity effects of main Heavy Metal Pollutant of the Bohai Sea on Artemia Nauplius

在水温为(27±0.5)℃,盐度为7°B′e和连续充气条件下,采用动态活水法研究了汞、铅、铜、锰、镉对卤虫无节幼体的毒性效应及联合毒性作用。结果表明,五种金属对卤虫无节幼体的48hLC50分别是0.028、1.31、4.06、12.15、28.91mg/L。毒性由强至弱依次为Hg2+>Pb2+>Cu2+>Mn2+>Cd2+,Hg-Cu,Cu-Mn对卤虫幼体的联合作用表现为拮抗作用,Pb-Cu、Pb-Mn、Mn-Cd则为协同作用。

The effects of toxicity and joint toxicity of hydrargyrum, plumbum, cuprum manganese, cad- mium to Artemia nauplius were studied at salinity 7°B＇e , temperature 27 ±0.5℃ and inflate using the dynamic living water method. The 48hLC50 of these five heavy metal to the artemia nauplius is0. 028,1.31, 4.06,12.15,28.91mg/L for artemia nauplius. The order of toxicity of hydrargyrum, plumbum, cuprum manganese,cadmium for artemia nauplius was Hg^2＋ 〉Pb^2＋〉Cu^2＋ 〉Mn^2＋ 〉Cd^2＋ Hg-Cu,Cu- Mn are antagonism; Pb- Cu,Pb- Mn,Mn - Cd are synergism.