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研究在ｐＨ＝１０的氨性缓冲溶液中，对氨基苯乙酮重氮盐、磺胺重氮盐和对氨基苯甲酸重氮盐在室温下与８－羟基喹啉生成具有电活性的偶氮化合物的最优实验条件，从而建立相应的灵敏、快速、选择性好的测定痕量ＮＯ２－的新方法。它们在ＰＰｂ级均有良好的线性关系，大量ＮＯ３存在不干扰测定；用于实际样品测定，均获满意的结果，对反应机理作了初步探讨。
In the ammonia buffer solution of pH = 10, p-aminoacetophenone diazonium salt, sulfonamide diazonium salt and para-amino benzoic acid diazonium salt with 8-hydroxyquinoline at room temperature to generate an electrically active azo compound The optimal experimental conditions were established to establish a new sensitive, rapid and selective method for the determination of trace NO2-. All of them have a good linear relationship at the PPb level, a large number of NO3 does not interfere with the determination; for the actual sample determination, are satisfied with the results, the reaction mechanism was initially discussed.