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 ›› 2013, Vol. 45 ›› Issue (11): 53-.

• 论文 • 上一篇    下一篇

ICP-MS法测定磷酸二氢钾中杂质元素

丁 灵1,梁炽琼2,弓创周1,夏俊玲1   

  1. 1.中海油天津化工研究设计院,天津 300131;2. 佛山市质量计量监督检测中心
  • 出版日期:2013-11-10 发布日期:2013-11-15

Detection of impurity elements in potassium dihydrogen phosphate with ICP-MS method

Ding Ling1,Liang Chiqiong2,Gong Chuangzhou1,Xia Junling1   

  1. 1.CNOOC Tianjin Chemical Research & Design Institute,Tianjin 300131,China;
    2.Foshan Supervision Testing Centre of Quality and Metrology
  • Online:2013-11-10 Published:2013-11-15

摘要: 建立了电感耦合等离子体质谱(ICP-MS)法测定磷酸二氢钾中铍、镁、镍、铜、锌、砷、硒、镉、锑、铊、铅等11种杂质元素的分析方法。样品经硝酸消解后进行分析,选用锂、铋、铟、铑元素为内标混合液校正基体干扰。研究结果表明,该方法对11种待测元素的加标回收率范围为86.00%~118.77%,相对标准偏差范围为3.79%~8.60%,方法的准确度和精密度均符合要求。该方法简便、快速,能满足磷酸二氢钾中多种杂质元素同时测定的分析需求。

关键词: 电感耦合等离子体质谱法, 磷酸二氢钾, 杂质元素

Abstract: 11 impurities analysis methods for determination of Be,Mg,Ni,Cu,Zn,As,Se,Cd,Sb,Tl,and Pb in potassium dihydrogen phosphate by inductively coupled plasma mass spectrometry(ICP-MS) was developed.After the sample was digested by HNO3,the above 11 impurities could be analyzed directly by ICP-MS.Li,Bi,In,and Rh were used to correct the matrix interference.Results showed the standard sample recovery rates of the 11 elements were in the range of 86.00%~118.77%.The relative standard deviation of the 11 elements were in the range of 3.79%~8.60%.The accuracy and precision of the methods both could meet the requirements.These methods are rapid,simple,and applicable for the analysis of various impurity elements in potassium dihydrogen phosphate.

Key words: inductively coupled plasma mass spectrometry, potassium dihydrogen phosphate, impurity elements

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