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本法以测定水中总氮为目的,用硼氢化钠将硝酸根还原成铵进行研究。在含有硝酸根的溶液中,加入硼氢化钠与镍将硝酸根还原成铵离子,用靛酚法进行测定。试剂硝酸根标准溶液(N 为0.1g/L):称取
This law to determine the total nitrogen in water for the purpose, with sodium borohydride nitrate will be reduced to ammonium research. In the nitrate-containing solution, sodium borohydride and nickel were added to reduce the nitrate to ammonium ion and the indophenol method was used. Reagent nitrate standard solution (N is 0.1g / L): Weigh