【摘要】 本文以对氨基苯磺酸与亚硝酸在酸性条件下重氮化的放热反应为基础,通过测定孤立体系中的温度变化,建立起亚硝酸根的热焓分析方法。该方法在0.035～0.230mg/ml范围内可准确测定NO₂^-的含量,相对标准偏差小于1.36％,平均相对误差小于0.72％,最低检出限为0.035mg/ml。更多还原

【Abstract】 An enthalpic analytical method of NO₂^- has been developed based on measuring the change of temperature in the isolated system during the diazo-reaction of o-aminoben-zenesulfonic acid , which belongs to an exothermic reaction. The amounts of NO₂^- heve been detected in the range of 0. 035-0. 230 mg/ml with RSD of 1. 36%, relative average error of 0. 72% and detection limit of 0. 035 mg/ml.更多还原