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  • Title: Development and validation of an analytical method to determine Fipronil and its degradation products in soil samples.
    Author: Flores-Ramírez R, Batres-Esquivel LE, Díaz-Barriga Martínez F, López-Acosta I, Ortiz-Pérez MD.
    Journal: Bull Environ Contam Toxicol; 2012 Oct; 89(4):744-50. PubMed ID: 22893178.
    Abstract:
    The aim of this study was to develop a methodology for identifying and quantifying Fipronil and its degradation products in soil by gas chromatography-electron capture detector previously extracted using a focused ultrasound probe. This methodology was obtaining a range of recovery between 85% and 120%, decreasing approximately solvent used time and cost, respect to other methodologies such as bath ultrasonic, solid-phase extraction, liquid-liquid extraction and soxhlet. The method was validated in fortified matrix, presented linearity in the range of 25-400 μg kg(-1), and limit of detection for Fipronil and their products desulfinyl, sulfide and sulfone was 14.7, 9.8, 8.9 and 10.7 μg kg(-1), respectively. This process was applied to samples of agricultural soils, where two degradation products desulfinyl and sulfone were found.
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