SUPERCRITICAL-FLUID EXTRACTION OF SULFONYLUREA HERBICIDES IN SOIL SAMPLES

Authors
BERDEAUX O DEALENCASTRO LF GRANDJEAN D TARRADELLAS J
Citation
O. Berdeaux et al., SUPERCRITICAL-FLUID EXTRACTION OF SULFONYLUREA HERBICIDES IN SOIL SAMPLES, International journal of environmental analytical chemistry, 56(2), 1994, pp. 109-117
Citations number
11
Categorie Soggetti
Environmental Sciences","Chemistry Analytical
Journal title
International journal of environmental analytical chemistry → ACNP
ISSN journal
03067319
Volume
56
Issue
2
Year of publication
1994
Pages
109 - 117
Database
ISI
SICI code
0306-7319(1994)56:2<109:SEOSHI>2.0.ZU;2-4
Abstract
The application of supercritical fluid extraction (SFE) with supercrit ical CO2 to the analysis of 2 sulfonylurea herbicides in 4 soils is pr esented. Methanol and water are added to the soil samples as modifiers . After extraction, Chlorsulfuron and Metsulfuron methyl are measured by HPLC-UV at 220 nm. The recovery rates are good (>80%) for all types of the studied soils except for those with high organic carbon conten t (ca. 50%). According to the characteristics of the soils, recovery w ith SFE is similar or better than with liquid-solid extraction.