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络合滴定时不显突跃变色的原因林令华吴静石景英（江苏省东海县人民医院东海２２２３００）本院制备的人工肾透析液含氯化钙０．９５％、氯化镁０．３８％。根据《中国医院制剂规范》［１］用络合滴定法测定钙、镁总量，当加氨－氯化铵缓冲液及铬黑Ｔ少许后，用乙二胺四醋...
The reasons for inconspicuous sudden discoloration during complexometric titration LIN Ling-hua WU Jing SHI Jing-ying (Donghai People’s Hospital of Jiangsu Province, East China Sea 222300) The artificial kidney dialysate prepared in our hospital contains 0.95% calcium chloride and 0.38% magnesium chloride. According to “China Hospital Preparation Specification” [1] with complexometric titration of calcium, magnesium total, when adding ammonia - ammonium chloride buffer and a little black T, with ethylene diamine four vinegar ...