Analysis of etoxazole in red pepper after major modification of QuEChERS for gas chromatography-nitrogen phosphorus detection

Jang J., Rahman M. M., HASSIBELNABY A. M. A., Ko A., Park J., Choi J., ...Daha Fazla

BIOMEDICAL CHROMATOGRAPHY, cilt.28, sa.6, ss.767-773, 2014 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Sayı: 6
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1002/bmc.3130
  • Dergi Adı: BIOMEDICAL CHROMATOGRAPHY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.767-773
  • Atatürk Üniversitesi Adresli: Hayır

Özet

A major modification to the QuEChERS (quick, easy, cheap, effective, rugged and safe) method was developed for the analysis of etoxazole in red pepper using gas chromatography coupled with a nitrogen-phosphorus detector. Etoxazole was extracted with acetonitrile, partitioned with magnesium sulfate and purified with a solid-phase extraction cartridge. The method showed good linearity with a determination coefficient (R2) of 0.998 for the 0.02-2.0mg/L concentration range. The method was validated using blank red pepper spiked at 0.2 and 1.0mg/kg, and the average recovery rate was 74.4-79.1% with relative standard deviations <5% for intra- and inter-day precision. The limits of detection and quantification were 0.007 and 0.02mg/kg, respectively. The developed method was successfully applied to field-incurred samples, and the presence of etoxazole residues was confirmed using gas chromatography/mass spectrometry. Copyright (c) 2014 John Wiley & Sons, Ltd.