蔬菜干制品中铝元素的ICP-MS法分析

Aluminum Determination in the Dried Products of Vegetables by Inductive Coupled Plasma Mass Spectrum

采用微波消解法处理样品,运用电感耦合等离子体质谱法对蔬菜干制品中的铝元素进行分析。对样品前处理方法进行了研究,从消解体系、酸用量、消解程序等方面对微波消解条件进行了优化。结果表明:在优化实验条件下,方法检出限为检出限为0.1mg/kg,定量限为0.3mg/kg,相对标准偏差(RSD,n=6)为1.40%,测定值与国家标准物质的定值符合良好。该方法具有准确度高、操作简便,快速,灵敏度高等优点。

Aluminmn in the dried products of vegetables digested by microwave are detected by inductive eoupled plasma mass spectrum （1CP-MS）.The microwave digestion condition is optimized from digestion system,proportion of acids and digestion procedmv.The results show that the method of deteetion limit is 0.1mg/kg with the relative standard deviations,（RSD,n=6）of 1.40%,and the measured values are ahnost the same as lhe national？certified standard substanees？.The method is reliable,simple operation,rapid and high sensitivity.