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本文第一次提出汞样品经硝酸消化后，汞（Hg）与氮氧化物（NxOy）形成络合物，在经典的加氯化亚锡（SnCl2）还原时，生成Hg与NxOy并能同时追出，确定了Hg与NxOy存在配位关系，对汞的测定在数学计量上增加到1．5倍，结果表明，应用五氧化二钒消化奶粉样品能如实反映这一关系，并精确地得出其汞含量。在联合国环境规划署和粮食农业组织及世界卫生组织食品污染联合监测计划的第八届铅、镉、汞的分析质量保证中，应用本法测得结果与真实值一致。本文对方法的研究，不但对汞的测定提高了准确度和灵敏度，而且为重新认识其反应机理以新的启迪。
In this paper, for the first time, mercury (Hg) forms a complex with nitrogen oxide (NxOy) after it is nitric acid digested, and Hg and NxOy can be formed simultaneously with the classical reduction with SnCl2 Out, to determine the existence of Hg and NxOy coordination between the determination of mercury in the mathematical metrology increased to 1.5 times the results show that the use of vanadium pentoxide digestion milk powder samples can accurately reflect this relationship, and accurately come to Its mercury content. In the United Nations Environment Program and the Food and Agriculture Organization and the World Health Organization joint monitoring of food contamination monitoring of lead, cadmium, mercury quality assurance, the application of this method measured results consistent with the true value. The study of the method in this paper not only improves the accuracy and sensitivity of mercury determination, but also provides new inspiration for re-understanding of its reaction mechanism.