Analysis of etoxazole in red pepper after major modification of QuEChERS for gas chromatography-nitrogen phosphorus detection
BIOMEDICAL CHROMATOGRAPHY, cilt.28, sa.6, ss.767-773, 2014 (SCI-Expanded, Scopus)
- 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.