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胆结石是外科常见病,钙和镁在胆石形成中有重要的作用。为探索胆石的成因和溶石的途径,需要测定胆汁中钙和镁的含量。关于胆汁中离子钙的测定,上次我们作了报导。对总钙测定,国内目前常用EDTA络合滴定法,因指示剂变色受胆汁颜色干扰等原因,精确度和准确度均较差。本文介绍用钙离子选择电极作指示电极,在pH 9—10氨性缓冲液中用EGTA作滴定剂测胆汁中总钙和EDTA作滴定剂测胆汁中总钙和总镁的合量,从两者之
Gallstone is a common surgical disease, calcium and magnesium in gallstone formation has an important role. In order to explore the cause of gallstone and the path of limestone, the contents of calcium and magnesium in bile need to be determined. Last time we reported on the determination of bile ionized calcium. Determination of total calcium, the current domestic commonly used EDTA complexometric titration, due to indicator color change by the bile color interference and other reasons, the accuracy and accuracy are poor. This article describes the use of calcium ion selective electrode as the indicator electrode, pH 9-10 ammonia buffer as a titration reagent with EDTA as the titration of total calcium and bile titration of total calcium and total magnesium in the total amount of magnesium, from two The person