Total reflection X-ray fluorescence determination of rare earth elements in mineral water

被引：6
|
作者：
Oskolok K.V. [1 ]
Monogarova O.V. [1 ]
Alov N.V. [1 ]
机构：
[1] Department of Chemistry, Moscow State University, Moscow
来源：
Moscow University Chemistry Bulletin | 2017年 / 72卷 / 1期
关键词：
dispersive liquid–liquid microextraction; mineral waters; rare earth elements; total reflection X-ray fluorescence analysis;
D O I：
10.3103/S0027131417010102
中图分类号：
学科分类号：
摘要：
A method is proposed for determination of lanthanum, cerium, praseodymium, neodymium, and samarium in mineral water by means of total-reflection X-ray fluorescence analysis. In this work, the combined technique of preconcentration of rare earth ions is used. This technique consists of coprecipitation of metal hydroxides on the collector (iron (III) hydroxide) and dispersive liquid–liquid microextraction of their complexes with 1-(2-pyridylazo)-2-naphthol by chloroform in the presence of ethanol. The use of the developed hybrid approach allows simultaneous determination of the mentioned metals in mineral water in the range n(10–2–101) μg/L. The results of analysis of Arkhyz and Rychal-Su mineral waters by the proposed extraction–X-ray fluorescent method are confirmed by the literature data, obtained by inductively coupled plasma mass spectrometry. © 2017, Allerton Press, Inc.
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页码：10 / 14
页数：4
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