以阳离子交换树脂分离钼与待测元素,用电感耦合等离子体原子发射光谱法测定金属钼中铝、钡、钙、钴、铜、铁、锰、镍、钒和锌的含量.对阳离子交换柱的制备、分离条件、分析线的选择、载流酸度和样品酸度等分析条件做了试验并予以优化.取样1 g时,10种元素的测定范围在10~160 μg·g-1之间,平行测定11次,方法的回收率在94.2%~110.0%之间,相对标准偏差(n=6)在3.3%~7.9%之间,测定限(10S/N)均为0.10 mg·L-1.

Micro-amounts of Al,Ba,Ca,Co,Cu,Fe,Mn,Ni,V and Zn in molybdenum were separated from the matrix by cation exchange resin,and determined by ICP-AES.Preparation of the cation exchange column and analytical conditions,including conditions of separation,choice of analytical spectral lines as well as the acidity of sample and carrier solutions were tested and optimized.Range of determination for all the 10 element was in the range of 10-160 μg·g-1,on the base of taking 1 g sample.Values of determination limit (10S/N) for these elements were same and attaining to 0.10 mg·L-1.Results of recovery test found were in the range of 94.2%-110.0%.Precision tests were made giving values of RSD′s (n=11) in the range from 3.3% to 7.9%.No significant difference was found between the results obtained by this method and by the AAS method.