胶州湾水域有机农药六六六分布及迁移

Distribution and Transport of Hexachlorocyclohexane in the Jiaozhou Bay

根据1979年的胶州湾水域调查资料，分析有机农药六六六（HCH）在胶州湾水域的分布、迁移和季节变化。分析结果表明，在一年中，胶州湾水域夏季HCH的污染严重，而春、秋季污染较轻。在时空分布上，春、夏、秋季整个胶州湾水域的HCH水平分布比较均匀，属于面污染源。HCH的表、底层含量都相近，水体的垂直分布均匀。整个胶州湾水域，春季HCH含量增加，夏季迭到高峰5．393～12．480μg／L，秋季降低到低值0．073～0．685μg／L，这与胶州湾的入湾河流的流量变化相一致。因此认为，农药HCH的使用导致胶州湾水域HCH含量的变化。

Based on the observed data in the Jiaozhou Bay in 1979, the distribution, transport and seasonal variations of hexachlorocyclohexane （HCH） in the Jiaozhou Bay were analyzed. It is shown from the analysis results that in the Jiaozhou Bay, the HCH pollution in summer was serious, and that in spring and autumn was light. The horizontal distributions of HCH in the Jiaozhou Bay in spring, summer and autumn were comparatively homogeneous, and the HCH pollution source belonged to planar pollution source. The HCH concentrations in the surface layer and bottom layer were close to each other, and the vertical distributions of HCH concentration were homogeneous. In the Jiaozhou Bay, the HCH concentration in spring increased, that in summer reached the peak value of 5. 393 to 12. 480 μg/L, and that in autumn decreased to a low value of 0.073 to 0. 685 μg/L, which is consistent with the variations in river discharge into the Jiaozhou Bay. Therefore, it is concluded that the use of pesticide HCH resulted in the variations in HCH concentration in the Jiaozhou Bay.