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本文以二乙醇胺代替ＫａｒｌＦｉｓｃｈｅｒ试剂中的吡啶．用库仑滴定法测定痕量水．在ＳＯ２与二乙醇胺的摩尔比为１：１．５～１：２．２时得到满意的结果、经与含吡啶的电解液对照，电流效率接近１００％．测定六水合三乙撑二胺的含水量，与理论值吻合．
In this paper, diethanolamine instead of pyridine in KarlFischer reagent. Determination of trace water by Coulometric titration. Satisfactory results were obtained when the molar ratio of SO2 to diethanolamine was 1: 1.5 to 1: 2.2, and the current efficiency was close to 100% as compared with the pyridine-containing electrolyte. Determination of hexahydrate triethylene diamine moisture content, consistent with the theoretical value.