氨氮测定中采用蒸馏法处理样品时加碱中和的探讨

Discussion on Adding Alkali to the Sample Which is Treated by Distillation in the Process of Ammonia Nitrogen Determination

采用纳氏试剂测定氨氮时 ,加入不同量的NaOH溶液对纳氏反应影响较大 ,经过多次实验 ,认为加入 5ml2 5 %NaOH中和

When we determinate the concentration of ammonia nitrogen by adding the Nessler's reagent, we add different quality alkali to it, this takes big effect on the Nessler's reagent method, after many experiments, we think that it is the fittest to add 0.5ml, 25% sodium hydroxide (NaOH) neutralizing 10ml boric acid.