| Title: | Solid-phase microextraction-gas chromatographic determination of volatile monoaromatic hydrocarbons in soil |
| Address: | "Department of Analytical Chemistry, Chemical Faculty, Technical University of Gdansk, Poland. zygmuntb@chem.pg.gda.pl" |
| ISSN/ISBN: | 0937-0633 (Print) 0937-0633 (Linking) |
| Abstract: | "Benzene, toluene, ethylbenzene, three isomers of xylene, and cumene have been isolated and enriched from soil samples by a combination of water extraction at room and elevated temperature and headspace-solid-phase microextraction before their gas chromatographic-mass spectrometric (GC-MS) determination. The conditions used for all stages of sample preparation and chromatographic analysis were optimized. Analytes sampled on a polydimethylsiloxane-coated solid-phase microextraction fiber were thermally desorbed in the split/splitless injector of a gas chromatograph (GC) coupled with a mass spectrometer (MS). The desorption temperature was optimized. The GC separation was performed in a capillary column. Detection limits were found to be of the order of ca. 1 ng g(-1). Relative recoveries of the analytes from soils were found to be highly dependent on soil organic-matter content and on compound identity; they ranged from ca 92 to 96% for sandy soil (extraction at room temperature) and from ca 27 to 55% for peaty soil (extraction at elevated temperature). A few real-world soil samples were analyzed; the individual monoaromatic hydrocarbon content ranged from below detection limits to 6.4 ng g(-1) for benzene and 8.1 for the total of p- + m-xylene" |
| Notes: | "PubMed-not-MEDLINEZygmunt, B Namiesnik, J eng Germany 2001/10/05 Fresenius J Anal Chem. 2001 Aug; 370(8):1096-9. doi: 10.1007/s002160100918" |
