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Issue 12, 2008
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Determination of sulfur in fluid inclusions by laser ablation ICP-MS

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Abstract

The quantification capabilities for sulfur microanalysis in quartz-hosted fluid inclusions were investigated with laser ablation (LA) inductively coupled plasma quadrupole mass spectrometry (ICP-Q-MS) and ICP sector field mass spectrometry (ICP-SF-MS) allowing resolution of sulfur from polyatomic interferences. A scapolite mineral sample was used to determine the sulfur concentration in NIST SRM 610 (570 ± 70 µg g−1), which was further validated using EPMA and then used as standard reference material for the fluid inclusion analysis. The sulfur concentration in an assemblage of brine inclusions from a quartz–molybdenum vein was determined to be 5900 ± 2000 µg g−1 measuring 17 inclusions with the ICP-SF-MS and 13 inclusions with the ICP-Q-MS instrument. The agreement between the two ICP-MS instruments for sulfur was ∼5% and well within the overall precision of 35% relative standard deviation. The precision and accuracy was not limited by interferences, but by a so far unknown sulfur contamination source when ablating the host mineral quartz. Due to this contamination, a careful baseline correction is necessary which is described and discussed in detail. Nevertheless, the method developed to determine sulfur maintains the multi-element capabilities for individual fluid inclusions. Limits of detection for sulfur are correlated with the inclusion mass and were found to be ∼ 30–100 µg g−1 for 60 μm inclusions.

Graphical abstract: Determination of sulfur in fluid inclusions by laser ablation ICP-MS

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Publication details

The article was received on 01 May 2008, accepted on 21 Aug 2008 and first published on 09 Oct 2008


Article type: Paper
DOI: 10.1039/B807383J
J. Anal. At. Spectrom., 2008,23, 1581-1589

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    Determination of sulfur in fluid inclusions by laser ablation ICP-MS

    M. Guillong, C. Latkoczy, J. H. Seo, D. Günther and C. A. Heinrich, J. Anal. At. Spectrom., 2008, 23, 1581
    DOI: 10.1039/B807383J

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