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亚硝酸盐广泛存在于土壤、天然水和食品等物质中，其易与仲胺、卧胺反应，生成致癌的亚硝胺，因此对其含量测定是环境监测和卫生检验工作中的重要项目。亚硝酸盐的测定在水质分析、食品分析的国际分析中采用格氏法（GB5750－85‘GB5009’33－85），但存在试剂稳定性差、毒性大?
Nitrite is widely found in soils, natural water and foodstuffs. It is easy to react with secondary amines and phenols to produce carcinogenic nitrosamines. Therefore, the determination of nitrite is an important project in environmental monitoring and sanitation inspection. Determination of nitrite in the water quality analysis, food analysis of the international analysis using the Grignard method (GB5750-85’GB5009’33-85), but there is poor reagent stability, toxicity?