【摘要】 <正> 镍和钴对人的健康有着密切的关系,人发中的微量元素往往能很好地反映出人的健康状况。电化学方法中测定痕量元素有效的阳极溶出伏安法由于镍和钴在汞中的溶解度很小而无法应用。最近报导了利用镍（Ⅱ）-丁二肟（Ni（Ⅱ）-DMG）的螯合物Ni（Ⅱ）A₂在悬汞电极（HMDE）上吸附富集的伏安法测定了水、生物物质和食品中的镍。用线性更多还原

【Abstract】 An effective procedure for the voltammetric determination of trace quantity of Ni and Co is described. The voltammetric method simply consists in the application of voltammetry with linearly changing tension after prior interfacial accumulation by an adsorption layer of dimethylglyoximate at the HMDE. The adsorptive voltammetric characteristics of the nickel and Cobalt complexes with dimethylglyoxime have been investigated. The determinination of trace Ni and Co is effected by the appropriate pretreatment and digestion procedures in order to develop a versatile and timesaving analytical procedure suitable for human hair.更多还原