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

Erscheinungsjahr:

1996

Erschienen:

1996

Reproduktion:

Springer Online Journal Archives 1860-2002

Enthalten in:

Zur Gesamtaufnahme - volume:356

Enthalten in:

Fresenius' Zeitschrift für analytische Chemie - 356(1996) vom: Aug., Seite 508-511

Sprache:

Englisch

Beteiligte Personen:

Berger, B. M. [Sonstige Person]
Wolfe, N. Lee [Sonstige Person]

Links:

dx.doi.org

Umfang:

4

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLEJ201828634