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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.
Bd. 661-662
(2003)
.
- S. 347-356.
ISSN 0022-2860
DOI: https://doi.org/10.1016/j.molstruc.2003.09.005
Abstract
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.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | BAYCEER80709 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Professur Umweltgeochemie Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 22 Okt 2015 07:29 |
| Letzte Änderung: | 12 Mai 2017 07:20 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/20645 |