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水样中含有亚硝酸盐氮会干扰碘量滴定法测定溶解氧。随着亚硝酸盐氮含量的增加 ,溶解氧的浓度也会增加 ,当亚硝酸盐氮的含量大于 1mg/ L 时 ,亚硝酸盐氮对溶解氧的影响呈线性关系
Water samples containing nitrite nitrogen will interfere with the determination of dissolved oxygen titration titration. With the increase of nitrite content, dissolved oxygen concentration also increased. When the content of nitrite nitrogen was more than 1 mg / L, the effect of nitrite nitrogen on dissolved oxygen was linear