Analysis of Phenothrin and Its Metabolite 3-Phenoxybenzoic Acid (PBA) in Agricultural Products by GC and Ion-Trap GC/MS

Author:

HIRAHARA YOSHICHIKA1,TSUMURA YUKARI2,NAKAMURA YUMIKO2,TONOGAI YASUHIDE2,SHIBATA TADASHI2

Affiliation:

1. 1Kobe Quarantine Station, Center for Inspection of Imported Foods and Infectious Diseases, 1-1, Toyahama-cho, Hyogo-ku, Kobe 652

2. 2National Institute of Health Sciences, Osaka Branch, 1-1-43, Noenzaka, Chuo-ku, Osaka 540, Japan

Abstract

A sensitive method for analysis of phenothrin and its metabolite 3-phenoxybenzoic acid (PBA) in agricultural products by gas chromatography with electron capture detection (ECD-GC) and ion-trap gas chromatography/mass spectrometry (GC/MS) with chemical ionization (Cl) was investigated. After phenothrin in vegetables, fruits, potatoes, starches, and tea had been extracted with acetone, or in cereals and beans had been extracted with acetonitrile followed by Florisi! column chromatography, it was reextracted into n-hexane. PBA was determined by ECD-GC after esterification with hexafluoroisopropyl alcohol (HFIP) and diisopropylcarbodiimide (DIC). Phenothrin was determined by monitoring its molecular ion peak using ion-trap GC/MS and was confirmed by observing its spectral pattern. The detection limit for phenothrin by ECD-GC and ion-trap GC/MS by this method was 0.01 ppm. The detection limit for PBA by ECD-GC was 0.001 ppm. When phenothrin and PBA were added to samples at 0.2 and 1.0 ppm, the recoveries of phenothrin in each agricultural product ranged between 60.2 and 88.5% and those of PBA ranged between 37.8 and 89.5%. An actual-conditions surveillance analysis of six agricultural products imported from October to December 1994 indicated no phenothrin, but PBA was detected in all products.

Publisher

International Association for Food Protection

Subject

Microbiology,Food Science

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Toxicokinetic of phenothrin in rabbits;Veterinarski arhiv;2021-11-15

2. Low-Pressure Chemical Ionization in Ion Trap Mass Spectrometry;European Journal of Mass Spectrometry;2004-08

3. Determination of Low-level Pesticide Residues in Agricultural Products by Ion-trap GC/MS/MS;Journal of the Food Hygienic Society of Japan (Shokuhin Eiseigaku Zasshi);2003

4. Agricultural wastes;Water Environment Research;1998-06

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