在测定亚硝酸盐的实验中 ,有时会碰到一些样品在加入Ｎ- 1-萘基乙二胺溶液后 ,显色与标准系列颜色有明显差别 ,72 1分光光度计比色 ,也明显低于标准系列 ,而重新取样进行倍比稀释后测定 ,亚硝酸盐含量却远远超标。这样 ,就存在高浓度亚硝酸盐对显色结果影响的问题。以下实验就 In the determination of nitrite experiments, sometimes encounter some samples in the N-1 - naphthyl ethylenediamine solution, the color and the standard series of significant color difference, 72 1 spectrophotometer color, also significantly lower In the standard series, and re-sampling after the determination of the ratio of dilution, nitrite content is far exceeded. In this way, there is a problem of the influence of high-concentration nitrite on the color development result. The following experiment