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水的硬度怎么测
更新时间: 2020-11-02 00:00:00  

测水的硬度可以EDTA来滴定水中钙镁离子。也可以用原子吸收分别测出钙镁离子,然后相加算出总硬度。测定总硬度时用氨性缓冲溶液调节pH值。注意加入掩蔽剂掩蔽干扰离子。水的硬度最初是指水中钙、镁离子沉淀肥皂水化液的能力,其中包括碳酸盐硬度。水的硬度的表示方法有多种,我国采用的表示方法与德国相同。

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