ICP-MS法测定磷酸二氢钾中杂质元素

Abstract

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

CLC Number:

TQ126.35

DING Ling, LIANG Chi-Qiong, GONG Chuang-Zhou, XIA Jun-Ling. Detection of impurity elements in potassium dihydrogen phosphate with ICP-MS method[J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(11): 53-.

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Inorganic Acid-Base-Salt Committee of CIESC

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

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