图们江口水中Zn,Cd,Pb,Cu的形式分析

THE SPECIATION OF Zn, Cd, Pb, Cu IN WATER OF THE TUMEN RIVER ESTUARY

本文用防吸附物理涂汞电极反问极谱对图们江口、东海及日本海水中Zn,Cd,Pb,Cu进行了形式分析,其不稳定态的平均浓度分别为5.9,0.071,0.039,0.69ug/L(占总量的15～27％),分布较为均匀,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,Cd及Pb(10～30％)和颗粒态Zn,Cu和Cu(15～40％)的较高含量位于长江口、东海及图们江口。

This paper presents a study of the speciation of Zn, Cd, pb, Cu in water of the Tumen River Estuary and the Japan Sea using anti-adsorption physical-coated mercury film electrode inverse polarography. The mean concentrations of labile Zn, Cd, pb, Cu are 5. 9, 0. 011, 0. 039, 0. 69 μg/L (15-27% of total metal). The results show that the metal ions are homogeneously distributed, which supports the rule of homogeneous distribution of trace metal ion (free ion and labile complexes). The high contents of organic Zn, Cd and Pb (10-30%) and particulate Zn, Cd and Cu (15-40%) are in the Changjiang River, the East China Sea and the Tumen River Estuary.