Supercritical Fluid Extraction of Sulfonylurea Herbicides in Soil Samples

The application of supercritical fluid extraction (SFE) with supercritical CO 2 to the analysis of 2 sulfonylurea herbicides in 4 soils is presented. Methanol and water are added to the soil samples as modifiers. After extraction, Chlorsulfuron and Metsulfuron methyl are measured by HPLC-UV at 220 n...

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Veröffentlicht in:	International journal of environmental analytical chemistry 1994-01, Vol.56 (2), p.109-117
Hauptverfasser:	Berdeaux, O., De Alencastro, L. F., Grandjean, D., Tarradellas, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Additives Analysis methods Applied sciences Carbon chlorsulfuron Exact sciences and technology Herbicides Metsulfuron methyl Pollution Q1 Soil and sediments pollution soils sulfonylurea herbicides Sulfur compounds Supercritical fluid extraction Water
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Zusammenfassung:	The application of supercritical fluid extraction (SFE) with supercritical CO 2 to the analysis of 2 sulfonylurea herbicides in 4 soils is presented. 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 content (ca. 50%). According to the characteristics of the soils, recovery with SFE is similar or better than with liquid-solid extraction.
ISSN:	0306-7319 1029-0397
DOI:	10.1080/03067319408039799