Determination of benzimidazole fungicides in soil samples using microwave-assisted micellar extraction and liquid chromatography with fluorescence detection.
A simple and fast analytical method was developed for the determination of benzimidazole fungicides (benomyl, carbendazim, thiabendazole, and fuberidazole) in soil samples. The analytes were extracted from the soil samples by means of conventional microwave-assisted extraction, using the non-ionic surfactants polyoxyethylene 10 lauryl ether (POLE) and oligoethylene glycol monooalkyl ether (Genapol X-080) as extractants. Determinations were made by using liquid chromatography with direct fluorescence detection. The use of an analytical column Symmetry C-18 offered short retention times of analytes without the need of any pH regulators with mobile phase methanol-water (50 + 50, v/v). The best results were obtained using 5% (v/v) POLE as extractant with recoveries of the fungicides in spiked soil samples between 71 and 105%. The results were compared with those obtained when Soxhlet extraction was applied to the same soil samples.
Halko
Radoslav
R
Comenius University, Department of Analytical Chemistry, Faculty of Natural Sciences, Bratislava, Slovakia.
Padrón Sanz
Carolina
C
Sosa Ferrera
Zoraida
Z
Santana Rodríguez
José Juan
JJ
D001562:Benzimidazoles / Q000032:analysis* / Q000302:isolation & purification; D002853:Chromatography, Liquid / Q000379:methods*; D005453:Fluorescence; D005659:Fungicides, Industrial / Q000032:analysis* / Q000302:isolation & purification; D008823:Micelles; D008872:Microwaves; D000077423:Polidocanol; D011092:Polyethylene Glycols; D012989:Soil Pollutants / Q000032:analysis / Q000302:isolation & purification; D013501:Surface-Active Agents
D001562:Benzimidazoles; D005659:Fungicides, Industrial; D008823:Micelles; D012989:Soil Pollutants; D013501:Surface-Active Agents; D000077423:Polidocanol; D011092:Polyethylene Glycols; C116996:genapol X 080