摘要
研究并建立了 ICP-AES标准加入法同时测定钼粉中Fe、Ni、Al、Cu、Ca和Mg等杂质元素含量的方法.该方法采用盐酸-硝酸溶解样品,以标准加入法配制系列标准工作溶液;待测元素的分析谱线分别为Fe238.204 nm、Ni231.604 nm、A1167.078 nm、Cu327.396 nm、Mg280.270 nm、Ca393.366 nm;线性相关系数均达到0.996以上;测定结果的相对标准偏差为1.97％～5.08％,加标回收率为88％～113％;测定结果与国家标准GB/T 4325方法测定结果比对,基本相吻合.该方法测定结果准确可靠,能够满足科研生产对钼粉中Fe、Ni、Al、Cu、Ca和Mg等杂质元素含量测定的需求.
Abstract
An ICP-AES standard addition method for simultaneous determination of iron,nickel,aluminum,copper,calcium and magnesium in molybdenum powder was studied and established.The Sample was dissolved in hydrocholiric acid-nitric acid solution,standard addition method was used for getting a series of standard working solution samples.The analytical lines were Fe 238.204nm,Ni231.604nm,A1167.078nm,Cu327.396nm,Mg280.270nm,Ca393.366nm respectively.The linear correlation coefficients of each element were all above 0.996.The relative standard deviation of determination results was between 1.97％and 5.08％,and the recovery of standard additionwas from 88％to 113％.The measurement results were consistent with the results of national standard methods GB/T4325.The method is accurate,and can meet the needs of daily analysis for the determination of Fe,Ni,Al,Cu,Ca and Mg in molybedenum powder.
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维普
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