初级标准品外观对标准溶液标准化的影响研究——以硼砂为例

大学化学 Pub Date : 2020-01-01 DOI:10.3866/pku.dxhx202001040

Shasha Liu, Huixiang Li, Jie-Xin Lei

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引用次数: 0

摘要

对不同外观的硼砂在标准盐酸为一级标准的标准化中进行了比较研究。得到的盐酸浓度分别为0.1049 mol∙L−1和0.1052 mol∙L−1。然后根据数据的统计检验，发现两者之间存在显著差异。此外，硼砂的外观差异可能是由其性质的变化引起的，这将导致后续测量的误差。

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Study on the Effect of Appearance of the Primary Standard on Standardizing the Standard Solution: Borax as an Example

: Borax in different appearance is compared and studied in standardization of the standard hydrochloric acid as primary standard. The obtained concentrations of hydrochloric acid are 0.1049 mol∙L −1 and 0.1052 mol∙L −1 , respectively. Then based on the statistical test of the data, it was revealed that there are significant differences between the two. Additionally, appearance differences of borax, which may be caused by the change of its properties, will give rise to the error of subsequent measurements.

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来源期刊

大学化学

自引率

0.00%

发文量

5852

期刊介绍： University Chemistry is an educational research academic journal supervised by the Ministry of Education and co-sponsored by Peking University and the Chinese Chemical Society. It was founded in 1986 and changed to a monthly publication in January 2016. Its purpose is to promote and deepen the reform of university chemistry education and serve to improve the level of chemistry teaching in my country. The main columns are: Today's Chemistry, Teaching Research and Reform, Knowledge Introduction, Chemical Experiments, Teacher-Student Chats, Future Chemists, etc. The journal has been included in many databases such as China Journal Network Full-text Database, Wanfang Database, Taiwan Huayi Database, Chinese Science and Technology Journal Database (Full-text Edition), and American Chemical Abstracts.