Extraction of cloransulam-methyl from soil with subcritical water and supercritical CO2.
J Chromatogr A
; 897(1-2): 405-13, 2000 Nov 03.
Article
em En
| MEDLINE
| ID: mdl-11128225
ABSTRACT
Cloransulam-methyl was extracted from soil samples with supercritical CO2, subcritical water and conventional organic solvents. Supercritical CO2 was less efficient than conventional organic solvents; polarity modifiers had no impact on extraction efficiency. Extraction with supercritical CO2 exhibited a strong temperature dependence. Water was as effective as strong organic solvents for the extraction of cloransulam-methyl; however cloransulam-methyl hydrolyzed when extracted at 150 degrees C. Extraction temperature was the most important variable in increasing the efficiency and rate of extraction, while extraction pressure was not a significant variable.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Solo
/
Sulfonamidas
/
Benzoatos
/
Dióxido de Carbono
/
Água
/
Herbicidas
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article