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Chlorine isotope fractionation of a semi-volatile organochlorine compound during preparative megabore-column capillary gas chromatography
- Source :
-
Journal of Chromatography A . Jan2006, Vol. 1103 Issue 1, p133-138. 6p. - Publication Year :
- 2006
-
Abstract
- Abstract: Chlorine isotope fractionation during preparative capillary gas chromatography (pcGC) was investigated using 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT) as a model compound for semi-volatile organochlorine (OCl) molecules. Chlorine isotope analysis by thermal ionization mass spectrometry revealed no significant alteration of the chlorine isotope composition when the whole peaks were collected in pcGC (δ37Cl −3.2‰ versus −3.6‰ for the unprocessed DDT, ±0.5‰ SD). However, distinct isotope fractionations were measured for the front (δ37Cl −5.1‰) and tail (δ37Cl −1.8‰) segments of partially collected samples. Isolation of individual OCls by pcGC enables accurate off-line chlorine isotope analysis, and thus facilitates the investigation of naturally occurring OCls. [Copyright &y& Elsevier]
- Subjects :
- *ORGANOCHLORINE compounds
*GAS chromatography
*ISOTOPES
*HALOGENS
Subjects
Details
- Language :
- English
- ISSN :
- 00219673
- Volume :
- 1103
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Chromatography A
- Publication Type :
- Academic Journal
- Accession number :
- 19356545
- Full Text :
- https://doi.org/10.1016/j.chroma.2005.11.009