MICELLAR-ENHANCED FLUOROMETRIC-DETERMINATION OF CARBENDAZIM IN NATURAL-WATERS

Citation
J. Sancenon et M. Delaguardia, MICELLAR-ENHANCED FLUOROMETRIC-DETERMINATION OF CARBENDAZIM IN NATURAL-WATERS, Analytica chimica acta, 287(1-2), 1994, pp. 49-57
Citations number
30
Categorie Soggetti
Chemistry Analytical
Journal title
ISSN journal
00032670
Volume
287
Issue
1-2
Year of publication
1994
Pages
49 - 57
Database
ISI
SICI code
0003-2670(1994)287:1-2<49:MFOCIN>2.0.ZU;2-P
Abstract
A micellar enhanced flow-injection fluorimetric method was developed f or the determination of carbendazim in natural water samples. The meth od is based on the direct injection of 500 mu l of water into a three- channel flow manifold in which the samples are merged with a buffer so lution and subsequently with a surfactant solution. Two alternative pr ocedures were used: one based on the use of sodium dodecyl sulphate mi celles in 0.1 M HCl, which permits a 2.6-fold enhancement of the sensi tivity found in the absence of micelles to be obtained, and the other based on the use of cetyltrimethylammonium bromide in 0.1 M NaOH, whic h provides a 11.6-fold enhancement of sensitivity and a limit of detec tion of 1.3 x 10(-8) M, which corresponds to 2.5 mu g l(-1) of carbend azim. The recovery of carbendazim in spiked water samples of different types varied from 94 to 107%.