无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2021, Vol. 53 ›› Issue (3): 84-86.doi: 10.11962/1006-4990.2020-0219

• 化工分析与监测 • 上一篇    下一篇

废弃化学品中锌元素常量测定方法探讨

安晓英1(),黄文芳2,王正利3,彭义华2,叶嘉盛2,李铭4,赖晓丽5   

  1. 1.中海油天津化工研究设计院有限公司,天津 300131
    2.深圳市艾科尔特检测有限公司
    3.潍坊恒丰锌业有限公司
    4.成都产品质量检验研究院有限责任公司
    5.江西核工业兴中新材料有限公司
  • 收稿日期:2020-09-25 出版日期:2021-03-10 发布日期:2021-03-11
  • 作者简介:安晓英(1979— ),女,硕士研究生,高级工程师,长期从事无机化工产品以及废弃化学品处置领域国家标准及行业标准制修订工作;E-mail:864886432@qq.com

Discussion on determination method of zinc constant in waste chemicals

An Xiaoying1(),Huang Wengfang2,Wang Zhengli3,Peng Yihua2,Ye Jiasheng2,Li Ming4,Lai Xiaoli5   

  1. 1. CenerTech Tianjin Chemical Research and Design Institute Co.,Ltd.,Tianjin 300131,China
    2. Shenzhen Accurate Testing Co.,Ltd.
    3. Weifang Hengfeng Zinc Industry Co.,Ltd.
    4. Chengdu Products Quality Inspection Co.,Ltd.
    5. Jiangxi Nuclear Industry Xingzhong New Material Co.,Ltd.
  • Received:2020-09-25 Online:2021-03-10 Published:2021-03-11

摘要:

准确测定废弃化学品中锌元素含量是促进锌资源利用与再生的关键。为准确测定废弃化学品中锌的含量及形成行业标准,就废弃化学品中锌含量测定方法化工行业标准制定过程中锌测定的样品处理及常量测定方法进行了介绍,通过试验验证标准中利用沉淀杂质分离后返滴定法测定常量锌含量的相对标准偏差范围为0.36%~2.72%,样品试验加标回收率为97.4%~100.4%。得出结论:锌质量分数大于4.0%的废弃化学品采用该方法测定是可行的。

关键词: 废弃化学品, 锌元素, 行业标准, 分离杂质, 返滴定

Abstract:

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.

Key words: waste chemicals, zinc element, industry standard, impurity separation, back titration

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