| 摘要: |
| 本文参照Tessier[4]推荐的方法,用顺序提取法测定了长江口内外悬浮颗粒中Cu,Co元素5种化学形态的浓度。分析了重金属元素Cu,Co在盐度为0—33之间的形态分布和变化。 |
| 关键词: 悬浮体 重金属 化学形态 河口化学 |
| DOI： |
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| COPPER AND COBALT CHEMICAL FORMS IN THE SUSPENDED PARTICLES IN THE ESTUARY OF CHANGJIANG RIVER |
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| Abstract: |
| Five chemical forms of Cu and Co in the suspended particles in the estuary of Changjiang River were determined by the chemical sequential extraction procedure. Laws governing the change and distribution of them from fresh water to salt water were described. In January, 1986, the salinity was about 7 and the suspended particles decreased sharply as most of the suspended particles are removed by precipitation. the percentage of the five chemical species of elements in the suspended particles varied within the salinity range of 0.05 to 33. Cu and Co remained mainly in residual forms. The explored forms of heavy metals in the Changjiang River could also be expressed as follows: Cu and Co in residual form were estimated to be 68% and 73%, those in precipitation-coprecipitation phases were 18% and 20% respectively. |
| Key words: Suspended material, Heavy metal, Chemical forms, Estuary chemistry |
