本文研究了1983年5月—1984年2月天津新港褶牡蛎(Ostrea plicatula)体内Hg和As含量的季节变化。结果表明:牡蛎体内的Hg含量在秋季与冬季略高,夏季偏低;而As含量以春末和夏季较高,冬季最低。在牡蛎体内Hg的含量范围为0.118—0.235mg╱kg(干重),年平均值为O.183mg╱kg。As的含量范围为1.20—25.98mg/kg(干重),年平均值为19.46mg╱kg。 In this paper, the seasonal changes of Hg and As contents in Ostrea plicatula from May 1983 to February 1984 were studied. The results showed that the content of Hg in oyster was slightly higher in autumn and winter than in summer, while the content of As was higher in late spring and summer and lowest in winter. The content of Hg in oysters ranged from 0.118 to 0.235 mg / kg (dry weight) with an annual average of 0.83 mg / kg. The As content ranged from 1.20 to 25.98 mg / kg (dry weight) with an annual average of 19.46 mg / kg.