人工肾透析液是医院最常用的制剂之一,测定人工肾透析液钙镁含量时,常常出现终点突跃不明显,终点不稳定,影响结果的准确度,重现性差[1]。分析原因,与滴定时的温度、被测溶液的其他离子干扰有关,加水稀释[2]、加乙醇[3]、加三乙醇胺[4],可消除离子干扰。本研究采用正交设计对温 Artificial kidney dialysate is one of the most commonly used preparations in the hospital. When determining the content of calcium and magnesium in artificial kidney dialysate, it often appears that the end point jump is not obvious, the end point is unstable, and the accuracy and reproducibility of the result are poor [1]. Analysis of the reasons, and the titration temperature, the measured solution of other ions related to the interference, add water dilution [2], add ethanol [3], plus triethanolamine [4], to eliminate ion interference. In this study, orthogonal design was used for temperature