| 摘要: |
| 用防吸附物理涂汞电极反向极谱进行了东海至图们江水中Zn, Cd, Pd, Cu(1991年5—6月)的形式分析研究。结果表明,该4种元素不稳定态的平均浓度分别为5.7, 0.060, 0.035, 0.62 μg/L,分布较为均匀。该结果证实了痕量金属离子(自由离子及不稳定络离子)的均匀分布规律。有机结合态Zn, Pb, Cu和颗粒态的Zn, Cu的较高含量,位于长江口及东海水中。 |
| 关键词: 东海 图们江水 锌 镉 铅 铜 形式分析 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第2196号;国家自然科学基金,48970275号 |
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| THE SPECIATION OF Zn, Cd, Pb, Cu FROM THE EAST CHINA SEA TO TUMEN RIVER |
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Zhang Shoulin, Li Zelin
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Institute of Oceanology, Academia Sinica, Qingdao 266071
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| Abstract: |
| This paper presents a study of Zn, Cd, Pb, Cu (May - June 1991) speciation in Tumen River water using anti-adsorption physicall-coated mercury film elecotrode inverse polarography. The results show that: for Zn, Cd, Pb, Cu, the labile state were 3.2 - 8.4, 0.040 - 0.080, 0.017 - 0.065, 0.32 - 0.89 μg/L respectively; the inorganic weak bound forms were 0.2 - 3.7, 0.020 - 0.17, 0.004 - 0.073, 0.02 - 0.45 μg/L respectively; the inorganic strong bound forms were 1.8 - 8.8, 0.089 - 0.64, 0.020 - 0.095, 0.24 - 0.96 μg/L respectively; the organic bound forms were 0.70 - 12.0, 0.020 - 0.090, 0.023 - 0.13, 0.080 - 40.83 μg/L respectively; the particulate forms were 4.6 - 23, 0.030 - 0.20, 0.010 - 0.050, 0.38 - 1.10 μg/L respectively; and the ΣZn, ΣCd, ΣPb, ΣCu were 14.8 - 40.3, 0.21 - 0.84, 0.139 - 0286, 1.78 – 3.33 μg/L respectively.
The results showing that the labile state of Zn, Cd, Pb and Cu were homogencously distributed, coincided with those from a study by Cu et al., and proved the general rule of homogeneous distribution of trace metal ions in natural water. The higher contents of organic formsof Zn, Pb and Cu, and particulate forms of Zn, Cu are in the Changjiang River and the East China Sea. |
| Key words: East China Sea, Tumen River, Zinc, Gadmiurn, Lead, Copper, Speciation |
