Multiresidue determination of sulfonylurea herbicides by capillary electrophoresis for hydrolysis studies in water and sediments
Abstract Twelve sulfonylurea herbicides (bensulfuron-methyl, sulfometuron-methyl, ethametsulfuron-methyl, triasulfuron, tribenuron-methyl, nicosulfuron, chlorimuron-ethyl, thifensulfuron-methyl, primisulfuron-methyl, metsulfuron-methyl, chlorsulfuron, and amidosulfuron) were separated by free zone capillary electrophoresis with migration times less than 20 min. The additional simultaneous determination of the 2,3-dihydro-3-oxobenzisosulfonazole (saccharin) degradation product was possible after application of a temperature and voltage gradient. Detector responses (absorbances) at 239 and 220 nm were linear between 0.1 and 10.0 μg/ml. After extraction with acetonitrile, recoveries for the same concentration range from two different sediments were higher than 90% with variation coefficients lower than 16%. Dissociation constants of the sulfonylurea herbicides were determined..
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
1996 |
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Erschienen: |
1996 |
Reproduktion: |
Springer Online Journal Archives 1860-2002 |
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Enthalten in: |
Zur Gesamtaufnahme - volume:356 |
Enthalten in: |
Fresenius' Zeitschrift für analytische Chemie - 356(1996) vom: Aug., Seite 508-511 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Berger, B. M. [Sonstige Person] |
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Links: |
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Umfang: |
4 |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLEJ201828634 |
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520 | |a Abstract Twelve sulfonylurea herbicides (bensulfuron-methyl, sulfometuron-methyl, ethametsulfuron-methyl, triasulfuron, tribenuron-methyl, nicosulfuron, chlorimuron-ethyl, thifensulfuron-methyl, primisulfuron-methyl, metsulfuron-methyl, chlorsulfuron, and amidosulfuron) were separated by free zone capillary electrophoresis with migration times less than 20 min. The additional simultaneous determination of the 2,3-dihydro-3-oxobenzisosulfonazole (saccharin) degradation product was possible after application of a temperature and voltage gradient. Detector responses (absorbances) at 239 and 220 nm were linear between 0.1 and 10.0 μg/ml. After extraction with acetonitrile, recoveries for the same concentration range from two different sediments were higher than 90% with variation coefficients lower than 16%. Dissociation constants of the sulfonylurea herbicides were determined. | ||
533 | |f Springer Online Journal Archives 1860-2002 | ||
700 | 1 | |a Berger, B. M. |4 oth | |
700 | 1 | |a Wolfe, N. Lee |4 oth | |
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