盐酸萘乙二胺比色法测定葡萄酒中亚硝酸钠的含量

Determination of Nitrite in Grape Wine by N-(1-naphthyl)-ethylenediamine Dihydrochloride Spectrophotometric Method

使用盐酸萘乙二胺比色法测定葡萄酒中亚硝酸盐的含量。实验得出亚硝酸盐标准曲线线性回归方程为y=0.0128x-0.0017,相关系数R2=0.996,经过5次测定结果得出其RSD值为1.49%,平均回收率为98.8%。

Contents of nitrite in grape wine were determined by N-（1-naphthyl）-ethylenediamine dihydrochloride spectrophotometric method. Through the experiments,the regression equation of linear of the nitrite was determined as y=0.0128x-0.0017, R2 0.996,and through the determination of the five groups of samples, the RSD and average recovery were determined as 1.49% and 98.8%.