电感耦合等离子体原子发射光谱法测定电解钴中杂质元素

Inductively coupled plasma atomic emission spectrometric determination of impurity elements in electrolytic cobalt

金属钴试样经酸消解后,未经基体分离直接以全谱直读电感耦合等离子发射光谱仪测定其中杂质元素。确定了仪器的最佳工作条件,选择了合适的分析谱线,采用钇作为内标物质,补偿基体效应。方法测定各元素的检出限在0.0001～0.02mg.L-1范围内。方法用于样品的测定,相对标准偏差为1.5%～7.5%,回收率为94.0～104.0%,各元素的测定值与国家标准方法的测定值相符合。

Cobalt metal sample after with acid digestion,directly without matrix with the full spectrum of separation direct-read inductively coupled plasmaa tomic emission of impurity element determination.To determine the best working conditions of instrument,choose a suitable analytical spectral lines,adopt yttrium as internal standard material,compensation matrix effect.Method for determining the detect limit the elements in 0.0006% ～0.001% between.,Methods used for sample,the relative standard deviation is determined1.5%～ 7.5%,recovery of 94.0 ～104.0%,the result obtained were in consistency with thoses found by methods of the national standards.