食品总汞测定中三种不同前处理方法的对比研究

Comparative Study of Three Different Pretreatment Methods in the Determination of Total Mercury in Food

本文使用《食品安全国家标准食品中总汞及有机汞的测定》(GB 5009.17—2021)第四法“冷原子光谱法”对胡萝卜、豆角、大米、芹菜等8种标准物质中的总汞进行测定。采用直接进样法、快速消解法与微波消解法3种不同方式对样品进行处理,使用DMA-80型测汞仪进行测定。结果表明,快速消解法测定结果最为准确,8种标准物质检测结果均在标示值范围内。

This article uses the fourth method“Cold Atomic Spectroscopy”in the GB 5009.17—2021 to determine the total mercury in eight standard substances,including carrots,beans,rice,celery,etc.The samples were processed using three different methods:direct injection method,rapid digestion method,and microwave digestion method.The DMA-80 mercury meter was used for measurement.The results showed that the rapid digestion method was the most accurate,and the detection results of the 8 standard substances were all within the indicated value range.