电热解—塞曼原子吸收光谱法测定调味品中的总汞

Determination of total mercury flavoring with electric pyrogenation-zeeman atomic absorption spectrometry

采用电热解—塞曼原子吸收直接测汞仪,快速检测调味品中的总汞含量,并与原子荧光光谱法进行对照。本方法线性范围:0—2 ng,相关系数R=0.999 5,方法检出限0.15 ng。对几种标准参考物质的测定值均与定值相符。测汞仪测定的调味品总汞值与原子荧光法测定值相符。

Determination of total mercury in flavoring. Electric pyrogenation - Zeeman Atotmc ADsorpuon tnrect Mercury Analyzer was applied. Rapid detection of total mercury content in flavoring, and comparison with atomic fluorescence spectrometry. Results The linear range of this method was 0--2 ng, the linear correlation factor （R） was 0. 999, and the limit of detection was 0.15 ng. The results of determining some standard reference materials were all in the scope of standard values. The content of total mercury detected by direct mercury analyzer matched the level of total mercury detected by atomic fluorescence spectrometry. Conclusion This method is simple, rapid, sensitive and accurate, and is applicable for the demand of analyzing total mercury in flavoring.