TITLE

Solid-phase microextraction of benzimidazole fungicides in environmental liquid samples and HPLC—fluorescence determination

AUTHOR(S)
Monzón, A. López; Moreno, D. Vega; Padrón, M. E. Torres; Ferrera, Z. Sosa; Rodríguez, J. J. Santana
PUB. DATE
March 2007
SOURCE
Analytical & Bioanalytical Chemistry;Mar2007, Vol. 387 Issue 6, p1957
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Solid-phase microextraction (SPME) coupled with high-performance liquid chromatography (HPLC) with fluorescence detection was optimized for extraction and determination of four benzimidazole fungicides (benomyl, carbendazim, thiabendazole, and fuberidazole) in water. We studied extraction and desorption conditions, for example fiber type, extraction time, ionic strength, extraction temperature, and desorption time to achieve the maximum efficiency in the extraction. Results indicate that SPME using a Carboxen–polydimethylsiloxane 75 μm (CAR–PDMS) fiber is suitable for extraction of these types of compound. Final analysis of benzimidazole fungicides was performed by HPLC with fluorescence detection. Recoveries ranged from 80.6 to 119.6 with RSDs below 9% and limits of detection between 0.03 and 1.30 ng mL−1 for the different analytes. The optimized procedure was applied successfully to the determination of benzimidazole fungicides mixtures in environmental water samples (sea, sewage, and ground water).
ACCESSION #
24207431

 

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