高分子膜型イオン電極による活性汚泥処理工程水中のアンモニウムイオンと硝酸イオンの簡易定量

概要

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Determination of ammonium and nitrate ions in activated sludge process waters was examined by using plastic-membrane ammonium-and nitrate-selective electrodes. Magnesium sulfate solution was added to the samples for adjustment of ionic strength. Consequently the sample solutions contained 2.5×lO^<-2>M MgSO_4. Results obtained for ammonium ion (NH_4^+N, 1〜25mg/l) were a little higher than those by ion chromatography and coulometric titration method. Results for nitrate ion (NO_3^--N, l〜36mg/l) were slightly higher than those by ion chromatography. These results could be attributed to interference by potassium and chloride ions (determined by ion chromatography) for ammonium- and nitrate-selective electrodes, respectively. Thus, the present method is useful for routine analysis and successfully gives quick results on the effectiveness of nitroncation-denitrofication process.
社団法人日本分析化学会の論文
1987-02-05