【摘要】 海水中有机污染物在强碱性条件下被KMnO4所氧化。通过对生成物溶液中K2MnO4浓度的光度法测量(λ=430 nm),直接测定海水中有机物含量(以COD表示)。该方法的线性范围为0.40~4.50 mg/L(以邻苯二甲酸氢钾+甲酸钠体系为标准混合物溶液),测定海水COD的相对标准偏差RSD为8.9%,回收率为90%~114%。更多还原

【Abstract】 Organic pollutant in seawater was oxidized by KMnO₄ in 2 mol/L NaOH solution.KMnO₄ was reduced to K₂MnO₄.The content of organic pollutant（COD） in sea water was indirectly obtained by spectrophotometric determination（λ=430 nm） of K₂MnO₄ concentration.The linear range of this method is 0.4～4.5 mg/L.RSD is 8.9%.The recovery is 90%～114%.更多还原