汞是乳粉中必测指标之一 ,国家标准检验方法中采用回流消化和高压消解法进行样品前处理。但前法费时、消耗试剂量大 ,后法虽然试剂消耗量少 ,但价格昂贵、使用寿命短、密封要求高。我们参考文献〔1,2〕对乳粉的消解方法进行了改进。即用H2 O2 -HNO3浸提 ,此方法与标准法〔1〕比 Mercury is one of the necessary indicators in the determination of milk powder, the national standard test methods using reflux digestion and high pressure digestion method for sample preparation. However, before the method fee, the reagent consumption large, after the law although the reagent consumption less, but expensive, short life, high sealing requirements. We reference [1,2] on the digestion of milk powder has been improved. That is H2O2-HNO3 leaching, this method and the standard method [1] ratio