九龙江口和厦门港的666农药残留量

THE BHC RESIDUES IN THE JIULONG RIVER ESTUARY AND XIAMEN HARBOUR

一、引言作为人们生产活动和生命活动的结果而进入海洋的诸多有机化合物中,氯代烃农药是当前人们最为关注的一种。特别是DDT和666农药在人体内的蓄积是众所关心的世界性问题。从远期毒性来看,可能对酶系统,内分泌系统、生殖机能和免疫反应等产生不良影响,而且可能引起致突变、致畸性和致癌作用等。同时,这类污染物导致破坏海洋生态平衡已完全被汪实。从而构成对人类的直接和间接威胁。河流和港湾是污染物向海洋转移的重要途径。九龙江是福建的第二条大河,横贯福建南部,三角洲一带农田星罗棋布,长年施以666农药作为主要杀虫剂,农业污水和工业废水汇入九龙江,流经重要港口厦门直倾台湾海峡。九龙江下游是重要的养殖基地,开发中的厦门特区风景优美,是驰名中外的旅游胜地。

The BHC(α+γ)residue in the water of the area was ranged 0.1—0.3μg/l during 1980—1981.There was a high concentration and two monthly peaks in the Jiulong River estuary,which is thought to be due to the effects from the agricultural activities.The concentration of BHC residue in the Xiamen Harbour was lower than that in the Jiulong River estuary,without significant seasonal variations.The residual concentration of BHC in the plankton was 50-150μg/kg(wet weight)in general.In warmer months,the residual concentration rose markedly.The distribution of the concentration factor of the plankton for BHC about 100—700,mostly within the range of 200—400 was one of normal distribution approximately.