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Determination and Method Validation of the New Sulfone Fungicide 2-(4-Fluorophenyl)-5-Methylsulfonyl-1,3,4-Oxadiazole in Tomato and Soil by UPLC in Field Trial Samples from Guizhou Province, China

Linghu, Rong, Jin, Mingjiao, Pan, Sizhu, Zhang, Jing, Tang, Mingming, He, Jin, Zhang, Kankan, Hu, Deyu
Bulletin of environmental contamination and toxicology 2015 v.95 no.3 pp. 373-378
detection limit, ethyl acetate, field experimentation, fungicides, soil, tomatoes, ultra-performance liquid chromatography, China
A new method was developed and validated for the determination of 2-(4-fluorophenyl)-5-methylsulfonyl-1,3,4-oxadiazole (jiahuangxianjunzuo, JHXJZ) by ultra-performance liquid chromatography equipped with photo-diode array detector. JHXJZ from tomato and soil was extracted with ethyl acetate without further cleanup. The limits of detection and quantification of JHXJZ were 0.0083 and 0.025 mg kg⁻¹ in tomato, 0.0017 and 0.005 mg kg⁻¹ in soil, respectively. The average recoveries of tomato and soil were studied at three spiked levels and ranged from 84.51 % to 101.30 % and 85.30 % to 101.53 %, respectively, with relative standard deviations of 2.61 %–4.13 % and 1.21 %–4.80 %, respectively. The results indicated that the reported method could meet the requirement for the analysis of JHXJZ in trace amount in tomato and soil.