以合浦珠母贝稚贝为测试对象 ,比较了三种钻井泥浆和消油剂的 96h急性毒性效应。实验结果表明 ,钻井泥浆对合浦珠母贝稚贝的半致死浓度大于 10 5mg/ L;三种消油剂的半致死浓度分别为12 58mg/ L ,4 4 69mg/ L和 2 545mg/ L。 Taking Hemarthoxylon japonicus juveniles as test objects, the 96h acute toxicity effects of three drilling muds and dispersants were compared. The experimental results show that the semi-lethal concentration of drilling mud to Juvenile Hemapala was over 105 mg / L; the lethal concentrations of three dispersants were 12 58 mg / L, 446 69 mg / L and 2 545 mg / L, respectively.