Experimental evaluation of elemental behavior during LA-ICP-MS: influences of plasma conditions and limits of plasma robustness

Fietzke, Jan and Frische, Matthias (2016) Experimental evaluation of elemental behavior during LA-ICP-MS: influences of plasma conditions and limits of plasma robustness Journal of Analytical Atomic Spectrometry, 31 (1). pp. 234-244. DOI 10.1039/c5ja00253b.

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Abstract

Matrix effects are one of the frequently observed and discussed issues challenging the accuracy of LA-ICP-MS results. The specific role of the ICP as a source of elemental fractionation seems not fully understood. We report the results of an experiment using six internationally available reference materials (five silicates, one carbonate) measured under 11 different plasma conditions. The thermal/energetic state of the plasma was estimated based on the ratio of Ar-38(+) and Ar-40(2)+ ions. We show that element specific behavior (volatile vs. refractory) dominates at cool but vanishes under hot plasma conditions. For robust (hot) plasma conditions matrix-tolerance seems to be achieved. Additionally we address the problem of matrix-load with respect to the plasma conditions. We've estimated practical limits for the amount of matrix which can be introduced into the ICP without significantly changing the plasma conditions

Document Type: Article
Keywords: ICP-MS, Laser Ablation, elemental fractionation, matrix effect, plasma conditions
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS Magmatic and Hydrothermal Systems
Refereed: Yes
DOI etc.: 10.1039/c5ja00253b
ISSN: 0267-9477
Date Deposited: 22 Jan 2016 08:24
Last Modified: 03 May 2017 11:00
URI: http://eprints.uni-kiel.de/id/eprint/31091

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