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硝酸根和亚硝酸根同时测定,对胃癌检验及食品分析具有十分重要的意义。目前多采用分光光度法测定。由于试样中颜色、浑浊都有干扰,分离手续繁杂,不能满足分析要求。Choi等报道用液膜硝酸根电极同时测定肉类中硝酸盐和亚硝酸盐的含量,取得与光度法一致的结果。本文探讨了离子选择电极用于临床医学检验及食品卫生分析方面同时测定硝酸根和亚硝酸根。使用国内商品PVC膜硝酸根电极或液膜硝酸根电极,测定了香肠、青菜、豆芽、
Nitrate and nitrite simultaneous determination of gastric cancer test and food analysis is of great significance. At present more spectrophotometric determination. Due to the sample in the color, turbidity has interference, separation procedures complicated, can not meet the analysis requirements. Choi and other reports using liquid membrane nitrate electrode simultaneous determination of nitrate content in meat and nitrite, obtained with the spectrophotometry results. This article explores the use of ion-selective electrodes for the simultaneous determination of nitrate and nitrite in clinical and food hygiene analyzes. Using domestic product PVC membrane nitrate electrode or liquid membrane nitrate electrode, the determination of sausage, vegetables, bean sprouts,