Ambient mass spectrometric detection of organometallic compounds using direct analysis in real time

From National Research Council Canada

Download	View accepted manuscript: Ambient mass spectrometric detection of organometallic compounds using direct analysis in real time (PDF, 1 MB)
DOI	Resolve DOI: https://doi.org/10.1021/ac901778n
Author	Search for: Borges, Daniel L. G.¹; Search for: Sturgeon, Ralph E.¹; Search for: Welz, Bernhard; Search for: Curtius, Adilson J.; Search for: Mester, Zoltán¹ORCID identifier: https://orcid.org/0000-0002-2377-2615
Name affiliation	National Research Council of Canada. NRC Institute for National Measurement Standards
Format	Text, Article
Journal title	Analytical Chemistry
ISSN	0003-2700 1520-6882
Volume	81
Issue	23
Pages	9834–9839
Abstract	The present work describes the mass spectrometric detection of organometallic compounds following their atmospheric pressure ionization using a commercial direct analysis in real time (DART) ion source. Several organometallic compounds of As, Fe, Hg, Pb, Se, and Sn were examined, and their corresponding mass spectra as well as induced fragmentation patterns were recorded. Gas phase sampling of the pure organometallic compounds or their solutions prepared in toluene generated temporally stable signals. For the majority of the compounds, the molecular ion or protonated molecule was detected; noticeable exceptions are the tetra-substituted compounds for which their less-substituted species dominated. The organometallic species were used as model compounds for a systematic investigation of the impact of operating parameters of the DART source, including gas temperature and electrode voltages. In general, results have shown that powering the electrodes designed to remove ions from the DART gas stream results in a reduction in signal intensity for most of the compounds investigated, suggesting that charged species from the plasma play an important role in the ionization process of the test analytes.
Publication date	2009-10-28
Language	English
Peer reviewed	Yes
NPARC number	21277192
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Record identifier	d3ffbfaa-b0b0-4654-af69-25679cb602df
Record created	2016-01-05
Record modified	2020-06-04

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Date modified:: 2021-01-26