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Issue 8, 1989
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Avoidance of spectral interference on europium in inductively coupled plasma mass spectrometry by sensitive measurement of the doubly charged ion

Abstract

Low-level rare earth element (REE) determination is becoming increasingly important in a number of scientific areas. In general, the determination of REE by inductively coupled plasma mass spectrometry (ICP-MS) is straightforward with detection limits typically less than 0.05 ng ml–1 and interference effects are usually minimal. However, both the light REE and Ba form oxide species (typically 1–2% of the parent ion) which can cause significant interference effects if the ratio of these elements to the middle REE, e.g., Eu, and heavy REE is high. A method was developed to avoid spectral interferences on europium from [BaO]+, by sensitive measurement of Eu2+ ions. Experimental data show that the maximum yield of doubly charged species occurs at a relatively high nebuliser gas flow-rate (0.95 l min–1) using 1500 W forward r.f. power. Under these optimum operating conditions a stable signal results, with detection limits close to those measured using singly charged ions.

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Article information


J. Anal. At. Spectrom., 1989,4, 743-747
Article type
Paper

Avoidance of spectral interference on europium in inductively coupled plasma mass spectrometry by sensitive measurement of the doubly charged ion

K. E. Jarvis, A. L. Gray and E. McCurdy, J. Anal. At. Spectrom., 1989, 4, 743
DOI: 10.1039/JA9890400743

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