SEPARATION AND ENRICHMENT OF TRACES OF EXPLOSIVES AND THEIR BY-PRODUCTS FROM WATER BY MULTIPLE MICRO LIQUID EXTRACTION FOR THEIR DETERMINATION BY CAPILLARY GAS-CHROMATOGRAPHY

Authors
WELSCH T BLOCK H
Citation
T. Welsch et H. Block, SEPARATION AND ENRICHMENT OF TRACES OF EXPLOSIVES AND THEIR BY-PRODUCTS FROM WATER BY MULTIPLE MICRO LIQUID EXTRACTION FOR THEIR DETERMINATION BY CAPILLARY GAS-CHROMATOGRAPHY, Fresenius' journal of analytical chemistry, 357(7), 1997, pp. 904-908
Citations number
29
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
357
Issue
7
Year of publication
1997
Pages
904 - 908
Database
ISI
SICI code
0937-0633(1997)357:7<904:SAEOTO>2.0.ZU;2-9
Abstract
A fast sample preparation method for the trace determination of some e xploxives, by-products and degradation compounds in water by capillary gas chromatography is described. It is based on multiple extractions of the water sample with sub-milliliter amounts of solvent and subsequ ent concentration of the unified extracts by reducing its volume to a few microliters according to Dunges. The most suitable solvent was met hyl-tert.-butylether. With electron caption detection and an aqueous s ample volume of 25 to 100 ml, the determination level is in the pg/ml range.