THE DETERMINATION OF LOW LEVELS CADMIUM IN SEAWATER BY ANODIC STRIPPING VOLTAMMETRY

Xin Xueyi; Yin Xiangchun; Duan Zhe; Wang Guiyun

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Xin Xueyi, Yin Xiangchun, Duan Zhe, Wang Guiyun. THE DETERMINATION OF LOW LEVELS CADMIUM IN SEAWATER BY ANODIC STRIPPING VOLTAMMETRY[J]. Haiyang Xuebao, 1982, 4(1): 35-42.

Citation:

Xin Xueyi, Yin Xiangchun, Duan Zhe, Wang Guiyun. THE DETERMINATION OF LOW LEVELS CADMIUM IN SEAWATER BY ANODIC STRIPPING VOLTAMMETRY[J]. Haiyang Xuebao, 1982, 4(1): 35-42.

Xin Xueyi, Yin Xiangchun, Duan Zhe, Wang Guiyun. THE DETERMINATION OF LOW LEVELS CADMIUM IN SEAWATER BY ANODIC STRIPPING VOLTAMMETRY[J]. Haiyang Xuebao, 1982, 4(1): 35-42.

Citation:

Xin Xueyi, Yin Xiangchun, Duan Zhe, Wang Guiyun. THE DETERMINATION OF LOW LEVELS CADMIUM IN SEAWATER BY ANODIC STRIPPING VOLTAMMETRY[J]. Haiyang Xuebao, 1982, 4(1): 35-42.

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THE DETERMINATION OF LOW LEVELS CADMIUM IN SEAWATER BY ANODIC STRIPPING VOLTAMMETRY

First Institute of Oceanography, National Bureau of Oceanography, Qingdan

Received Date: 1980-03-26

Abstract

Abstract

A simple and rapid m}athod for the determination of Cd at low levels down. to 0.01ug Cd/l in seawater by anodic stripping voltammetry with a precision RSD of 6% and recovery of 92.5% is described. The method was based mainly on the principle of the positive "coordinating effect" of metallic ions during plating.In analysis, a sensitive AD-1 model polerography of Chinese manufacture and its mercury-film electrode was used without any preliminary treatment of the sample. The deoxygenation process was simply performed by adding 3 drops of saturated Na₂SO₃ solution to 50m1 of seawater sample without passing N₂-gas.The total time for a plating and stripping cyae was 6 min.