Abstract：
:This paper describes a comparison of the properties of the three versions of the QuEChERS method (quick, easy, cheap, effective, rugged and safe) - the original (unbuffered), acetate-buffered, and citrate-buffered methods - for the determination of fenobucarb residues in beef muscles via liquid chromatography-electrospray ionisation tandem mass spectrometry (LC-ESI(+)-MS/MS). The recovery results were good for all the versions; however, the acetate-buffered version gave higher and more consistent recoveries for fenobucarb than the other versions. Performance characteristics, such as linearity, accuracy, and precision were determined. Matrix-matched standard calibration was used for quantification, obtaining recoveries in the range of 83.7-93.4% with relative standard deviations of <5%, at two spiking levels: 10 and 40 μg/kg. The limits of detection (LOD) and quantification (LOQ) were estimated to be 1.5 and 5 μg/kg, respectively. Finally, the method was applied to the analysis of 15 market samples, and no residues were found over the limit of quantification. The method developed was found able to determine the analyte with satisfactory intensity and accuracy.
journal_name
Food Chemjournal_title
Food chemistryauthors
Park KH,Choi JH,Abd El-Aty AM,Musfiqur Rahman M,Jang J,Ko AY,Kwon KS,Park HR,Kim HS,Shim JHdoi
10.1016/j.foodchem.2012.12.029subject
Has Abstractpub_date
2013-06-15 00:00:00pages
2306-11issue
4eissn
0308-8146issn
1873-7072pii
S0308-8146(12)01924-3journal_volume
138pub_type
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