催化退色光度法测定亚硝酸根许金生１袁亚莉２邓健２赵金明１国内有关催化退色光度法测定亚硝酸根的研究报道［１～４］多用溴酸钾为氧化剂，所用指示剂种类较多。最近国外有人［５］选用吩噻嗪类物质作为亚硝酸根催化增色反应体系的指示剂，所用氧化剂为过氧化氢。我们通... Catalytic decolorization spectrophotometric determination of nitrite Xu Jinsheng 1 Yuan Yali 2 Deng Jian 2 Zhao Jinming 1 domestic catalytic fading spectrophotometric determination of nitrite research reports [1 ~ 4] more potassium bromate as oxidant, the use of more indicator species. Recently, some people abroad [5] selected phenothiazine substances as nitrite catalyst for colorimetric reaction system indicator, the oxidant used is hydrogen peroxide. We pass ...