Residue Analysis and Dissipation of Fluazinam in Apple Under Field Conditions

Junxue Wu1, Zhenlong Liu2, Canping Pan1, Yuzhen Zhao1 and Hongyan Zhang1,*

1Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, P.R. China

2Weifang Vocational College, Weifang 261041, Shandong Province, P.R. China

*Corresponding author: Fax: +86 10 62733219; Tel: +86 10 62733620; E-mail: hongyan@cau.edu.cn

Abstract

The analytical method for determining the residue of fluazinam and its dissipation in apple with gas chromatography-electronic capture detector (GC-ECD) was developed. At fortification levels of 0.01, 0.05, 0.5 mg/kg in apple, it was shown that the average recoveries ranged from 94.5 to 102.7 % with relative standard deviations (RSDs) of 1.1 to 3.7 % (n = 5). The limit of detection (LOD) and the limit of quantification (LOQ) of the method for fluazinam in apple were 0.003 mg/kg and 0.01 mg/kg, respectively. The half-lives of fluazinam in apple were 4.15-9.68 days and the terminal residues of fluazinam in apple were below maximum residue limits (MRLs) legislated 0.3 mg/kg by European Union at 28 days after the last spraying in three locations under open field ecosystems.

Keywords

Fluazinam, Apple, Residues, Dissipation, Gas chromatography-electronic capture detector.

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