配位滴定法测定生活用水的硬度
发布时间：2019-06-11 09:09
【摘要】：随着生活水平的提高,人们对生活用水的质量要求也随之升高。而水的硬度作为表示水质的一个重要指标,与人类生活密切相关。水的硬度是指水中各种可溶性钙盐和镁盐的含量,按照国家生活用水卫生标准,生活用水的硬度应小于450 mg/L(以Ca CO3计算)或小于25°(德国硬度)。采用EDTA配位滴定法测定几种不同的生活用水,并对测定结果进行分析。分析结果表明,几种不同的生活用水硬度均小于450 mg/L或小于25°,符合我国生活用水卫生标准。
[Abstract]:With the improvement of living standards, people's requirements for the quality of domestic water use are also increasing. As an important indicator of water quality, the hardness of water is closely related to human life. The hardness of water refers to the content of various soluble calcium and magnesium salt in water. According to the national hygienic standard of domestic water, the hardness of domestic water should be less than 450 mg/L (calculated in Ca CO3) or less than 25 掳(German hardness). Several kinds of domestic water were determined by EDTA coordination titration, and the results were analyzed. The results show that the hardness of several different kinds of domestic water is less than 450 mg/L or less than 25 掳, which accords with the hygienic standard of domestic water use in China.
【作者单位】： 曲阜师范大学化学与化工学院;
【分类号】：O655.2;R123.1
本文编号：2497077
[Abstract]:With the improvement of living standards, people's requirements for the quality of domestic water use are also increasing. As an important indicator of water quality, the hardness of water is closely related to human life. The hardness of water refers to the content of various soluble calcium and magnesium salt in water. According to the national hygienic standard of domestic water, the hardness of domestic water should be less than 450 mg/L (calculated in Ca CO3) or less than 25 掳(German hardness). Several kinds of domestic water were determined by EDTA coordination titration, and the results were analyzed. The results show that the hardness of several different kinds of domestic water is less than 450 mg/L or less than 25 掳, which accords with the hygienic standard of domestic water use in China.
【作者单位】： 曲阜师范大学化学与化工学院;
【分类号】：O655.2;R123.1
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4 李满秀;pH配位滴定法同时测定铜和锌[J];分析试验室;1995年01期
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7 杨府瑜;配位滴定法测定硫酸锰[J];山西化工;1996年01期
8 张大伦;多元线性回归pH配位滴定法同时测定镍铅钴[J];武汉化工学院学报;1996年02期
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