DIN 38413-5:1990
德國檢驗水、廢水和污泥的標準方法.專用組分(P 組).第5部分:采用極譜分析法(P 5)對乙二胺四乙酸(EDTA)和氮川三醋酸(NTA)的測定
German standard methods for the examination of water, waste water and sludge; individual constituents (group P); determination of ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA) by polarography (P 5)