摘要
本文基于在弱酸性或中性介质中,在有银盐存在下,K_2S_2O_8能将NH_4^+和NO_2^-氧化成NO_3^-等化学反应原理,拟定了用NO_3^-电极连续测定硝酸盐(氮)、亚硝酸盐(氮)和铵(氮)的电位分析方法,用于大气降水中三种氮的测定,结果较为满意。
A potentiometric method has been established for the consecutive determination of the nitrate -, nitrite-and ammonium-nitrogen by nitrate electrode based on the reactions of ammonium and nitrite with K_2S_2O_8 to form nitrate in weakly acidic medium by using silver salt as a catalyst. The method has been applied to the determination of the three kinds of nitrogen in atmospheric precipitation and the results obtained are in agreement with those with standard methods.
出处
《分析试验室》
CAS
CSCD
北大核心
1990年第5期34-36,共3页
Chinese Journal of Analysis Laboratory
