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Identification of organic arsenic, tin, antimony and tellurium compounds in environmental samples by GC-MS

Title data

Kösters, Jan ; Diaz-Bone, Roland A. ; Planer-Friedrich, Britta ; Rothweiler, B. ; Hirner, Alfred V.:
Identification of organic arsenic, tin, antimony and tellurium compounds in environmental samples by GC-MS.
In: Journal of Molecular Structure. Vol. 661-662 (2003) . - pp. 347-356.
ISSN 0022-2860
DOI: https://doi.org/10.1016/j.molstruc.2003.09.005

Abstract in another language

In this study, the potential of GGMS for structure analysis of organometal(loid) species of arsenic, tin, antimony and tellurium in environmental samples was investigated. Analytes were ionic organometal(loid) species from compost samples, which were derivatised with NaBH4 before introduction into the GUMS via a purge and trap system, as well as volatile species from hydrothermal gases sampled on SPME-fibres. Several organic species of arsenic, tin, antimony and tellurium were identified. By scanning the chromatogram for typical fragments of organoarsenic compounds seven arsenic species were identified. To our knowledge three of them (diarsine, monomethyl diarsine and dimethylarsenomercaptane) have not been reported in environmental samples so far. To further exclude artefacts being misinterpreted as volatile organometal(loid)s, measurements of volatile arsenic species naturally occurring in hydrothermal samples with SPME-GC-MS were performed. The determination of dimethylarsenomercaptane in these samples confirms that this compound which was also found after derivatisation of ionic arsenic species is not an artefact. A strategy for the identification of unknown species whose structure cannot be elucidated by library comparison or with the help of isotopic patterns is presented. The necessity of positive identification of unknown species and confirmation of known and assumed compounds for speciation analysis is highlighted and the applicability of quadrupol GUMS for this purpose is stated.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER80709
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Environmental Geochemistry Group
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 22 Oct 2015 07:29
Last Modified: 12 May 2017 07:20
URI: https://eref.uni-bayreuth.de/id/eprint/20645