Development and validation of an analytical method to determine Fipronil and its degradation products in soil samples.
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.
Centro de Investigación Aplicada en Ambiente y Salud, CIACYT-Medicina, Universidad Autónoma de San Luis Potosí., Av. Venustiano Carranza 2405, 78210 San Luis Potosí, SLP, Mexico. rogeliofloresram@gmail.com
R
R
Flores-Ramírez
L E
LE
Batres-Esquivel
F
F
Díaz-Barriga Martínez
I
I
López-Acosta
M D
MD
Ortiz-Pérez
D000383:Agriculture; D004784:Environmental Monitoring / Q000379:methods*; D007306:Insecticides / Q000032:analysis* / Q000737:chemistry; D011720:Pyrazoles / Q000032:analysis* / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis* / Q000737:chemistry
D007306:Insecticides; D011720:Pyrazoles; D012987:Soil; D012989:Soil Pollutants; C082360:fipronil