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58问答库 > EDTA标准液和Ca标准溶液的配制方法有何不同

EDTA标准液和Ca标准溶液的配制方法有何不同

2025-04-07 07:53:36

推荐回答（1个）

回答（1）：

1)钙标准溶液是基准溶液，用于标定EDTA，可用碳酸钙基准试剂经盐酸分解后直接配置；
2）EDTA是配位滴定中常用的标准滴定溶液，由于乙二胺四乙酸二钠含结晶水，再加上提纯比较困难，采用间接配置法，配置后用钙标准溶液标定其准确浓度。

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