Solid-phase microextraction of benzimidazole fungicides in environmental liquid samples and HPLC–fluorescence determination
Autor: | A. López Monzón, Z. Sosa Ferrera, J. J. Santana Rodríguez, D. Vega Moreno, M. E. Torres Padrón |
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Rok vydání: | 2007 |
Předmět: |
Detection limit
Benzimidazole Antifungal Agents Chromatography Molecular Structure Fuberidazole Carbendazim Extraction (chemistry) Fluorescence spectrometry Solid-phase microextraction Biochemistry High-performance liquid chromatography Analytical Chemistry chemistry.chemical_compound Spectrometry Fluorescence chemistry Benzimidazoles Adsorption Chromatography High Pressure Liquid Solid Phase Microextraction Water Pollutants Chemical |
Zdroj: | Analytical and Bioanalytical Chemistry. 387:1957-1963 |
ISSN: | 1618-2650 1618-2642 |
Popis: | 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 microm (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). |
Databáze: | OpenAIRE |
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