Multi-elemental Analysis of High-purity Molybdenum by Electrothermal Vaporization-Inductively Coupled Plasma Mass Spectrometry

被引：6

作者：

Medvedev, N. S. ^{[1
]}

Volzhenin, A. V. ^{[1
]}

Saprykin, A., I ^{[1
]}

机构：

[1] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia

来源：

ATOMIC SPECTROSCOPY | 2021年 / 42卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

ATOMIC-EMISSION-SPECTROMETRY; SITU MATRIX REMOVAL; ETV-ICP-AES; SAMPLE INTRODUCTION; VOLATILE ELEMENTS; TRACE-ELEMENTS; TUNGSTEN-COIL; ABSORPTION; SYSTEM; DIOXIDE;

D O I：

10.46770/AS.2020.189

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

High-purity molybdenum and its compounds are used for the synthesis of ionizing radiation detectors in the search for cosmic dark matter and double beta decay. The properties of these detectors largely depend on their trace composition. A new method using mass spectrometry with inductively coupled plasma (ICP-MS) and electrothermal vaporization (ETV) is proposed for the analysis of high-purity molybdenum. The samples were introduced into the ICP using the ETV device. The vaporization curves of the matrix element (molybdenum) and trace elements were studied in detail. The dependence of the analytical signal and the limits of detection (LODs) of the analytes versus the ETV-ICP-MS instrumental parameters (ICP power, transport flow, ion optics settings) was established. The proposed method allowed to determine the concentrations of 28 trace elements in high-purity molybdenum with a purity of 6N (99.9999% wt.) and provided LODs from 0.3 to 200 ng g(-1) compared to ICP-MS analysis with the standard sample introduction system. Validation of the proposed ETV-ICP-MS method was performed by spike experiments, and the results of ETV-ICP-MS, ICP-MS and atomic absorption spectrometry with electrothermal vaporization (ET-AAS) analysis are compared.

引用

页码：71 / 78

页数：8

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