工业循环冷却水污垢中锌含量测定方法的改进

摘要

对工业循环冷却水污垢中锌含量的测定法进行了改进，通过加大缓冲溶液的加入量，沉淀并过滤样品中的干扰离子，锌含量的测定结果绝对差值不大于0．22％，加标回收率大于95％。%The approach for determination of zinc content in industrial circulating cooling water fouling was improved, by increasing the amount of buffer solution, precipitation and fiheration of the interfering ions in the filter samples. The absolute difference of the determination results of zinc content was no more than 0.22%, spikedrecoveries were greater than 95%.