废弃化学品中锌元素常量测定方法探讨
收稿日期: 2020-09-25
网络出版日期: 2021-03-11
Discussion on determination method of zinc constant in waste chemicals
Received date: 2020-09-25
Online published: 2021-03-11
安晓英 , 黄文芳 , 王正利 , 彭义华 , 叶嘉盛 , 李铭 , 赖晓丽 . 废弃化学品中锌元素常量测定方法探讨[J]. 无机盐工业, 2021 , 53(3) : 84 -86 . DOI: 10.11962/1006-4990.2020-0219
Accurate determination of zinc content in waste chemicals is the key to promote the utilization and regeneration of zinc resources.In order to accurately determine the zinc content in waste chemicals and formulate industry standards,the determination methods of zinc content in waste chemicals in the process of formulating chemical industry standards were introduced,including sample treatment and constant determination methods.The relative standard deviation for determining the major content of zinc by back titration after separation of precipitated impurities is 0.36%~2.72%,and the recovery rate of standard addition in sample test is 97.4%~100.4%.It is concluded that it is feasible to determine waste chemicals with zinc content greater than 4.0% by this method.
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