摘要
本文研究了在稀磷酸介质中，ＮＯ２－催化溴酸钾氧化孔雀绿褪色的指示反应，建立了催化光度法测定ＮＱ２－的新方法．ＮＯ２－量在０—４５０ｎｇ／２５ｍｌ范围内与ｌｎ（Ａ０／Ａ）成线性关系，用于水样和蔬菜中ＮＯ２－的测定取得满意结果．
new catalytic spectrophotometric method for determining trace NO2-has been described.The method is based on the catalytic oxidation of malachite green by potassium bromate in the solution of dilute phosphoric acid. The linear range for determination is 450ng/25ml for nitrite. The method is suitable for the determination of nitrite in water samples and vegetables.
出处
《淮北煤师院学报（自然科学版）》
1996年第2期52-54,共3页
Journal of Huaibei Teachers College(Natural Sciences Edition)
