四种~(14)C标记农药在某些海洋动物中的积累和降解

对14C－六六六、14C-毒死蝉、14C-敌百虫和14C-久效磷在几种海洋动物中的积累和降解进行了比较研究。结果表明，4种农药在实验动物中被积累的能力由大至小顺序为：14C－六六六和14C－毒死蝉，14C－敌百虫，14C－久效磷。而实验动物对农药的积累能力由大至小顺序为：小弹涂鱼Periophthalmuscantonensis,实验贝类，褶痕相手蟹Sesarma（Parasearma）plicata。不同动物对毒死蜱的降解能力各不相同：弹涂鱼的降解能力最强，其主要降解产物为三氯代吡啶酚（TCP）；毛蚶Scapharcasuberenata次之，主要降解产物为极性未知物;褶牡蛎AlectryonellaPlicatula和翡翠贻贝Pernaviridis的降解率也在30％以上，降解产物为TCP和极性未知物;波纹巴非蛤Pophia（Paphia）undulata和文蛤Meretrixmereitrix的降解能力较差。对14C－六六六和14C－毒死蜱在生物中的结合态比例有很大的差异。

ACCUMULATION AND METABOLISM OF FOUR ~(14)C-LABELED PESTICIDES BY SOME MARINE ANIMALS

A comparative study on accumulation and metabolism of 14C-HCH, 14C-chlorpyrifos, 14C-trichlorphon and 14C-mono crotophos by some marine animals is carried out. The results show that the capacities of the bioaccumulation of 4 pesticides are different. The highest are 14C-HCH and 14C-chlorpyrifos, followed by 14C-trichlorphon, and the lowest is 14C-mono crotophos. In general, the highest concentrations of the 4 pesticides are found in the fish. Periophthalmus cantonensis, then in mollusks and tile lowest in the crab, Sesarma (Parasesarme) plicata. Periophthalmus cantonensis can rapidly degrade chlorpyrifos into tri-chloro-pyridinol (TCP) for 75. 8% of the total 14 C-compounds; Scapharca subcrenata can also degrade chlorpyrifos, the metabolites are mainly polar compounds. About 30% of metabolites of chlorpyrifos are also degraded in oyster and mussel (Perna viridis). Proportions of bound residues to extrastable residues of 14C-HCH and 14C-chlorpyrios in the animals are rather different.