Determination of Triazole Fungicides Using Hollow Fiber Liquid Phase Microextraction Prior to Gas Chromatography–Mass Spectrometry Analysis
2012
Sarafraz-Yazdi, Ali | Assadi, Hakimeh | Wan Ibrahim, Wan Aini
A two phase hollow fiber liquid phase microextraction (HF-LPME) and gas chromatography mass spectrometry (GC-MS) method for the separation and determination of triazole fungicides, namely, penconazole, hexaconazole, diclobutrazole and diniconazole, is described. The extraction conditions were optimized for the four triazole fungicides as follows: extractant solvent, toluene; extraction time, 20 min; stirring rate, 720 rpm; no salt addition; and no pH adjustment. Under the optimal extraction conditions, the method showed good linearity (r² = 0.997–0.999), acceptable reproducibility (RSD% = 6–9%), low limit of detection (0.3–0.8 μg·L–¹), and satisfactory relative recoveries. The linear range is 1–5000 μg·L–¹. The developed HF-LPME method was applied for the determination of triazole fungicides in farm, river, and tap water and also grape juice samples.
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