摘要
还原-偶氮光度法测定硝基苯,改用NaOH调节至出现白色絮状沉淀,再加入200g/LKHSO4溶液1mL调节pH,可省去原方法中两步测试pH过程,更易操作。
The modified steps of Nitrobenzene determination with reduction-azo Colorimetry are as follows: putting NaOH till white tassel-like cluster in sample solution then adding into 1mL KHSO4 and adjusting PH. The modified steps are easily perform and better for analytical accuracy.
出处
《环境监测管理与技术》
1997年第6期44-45,共2页
The Administration and Technique of Environmental Monitoring