Validation of quantitative method for azoxystrobin residues in green beans and peas

•We validate a method for extraction and quantitative determination of azoxystrobin in green beans and peas.•We perform validation according the document SANCO/12571/2013 (SANCO, 2013).•We attained the validation parameters linearity, matrix effect, LOQ, specificity, trueness and repeatability preci...

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Veröffentlicht in:Food chemistry 2015-09, Vol.182, p.246-250
Hauptverfasser: Abdelraheem, Ehab M.H., Hassan, Sayed M., Arief, Mohamed M.H., Mohammad, Somaia G.
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Sprache:eng
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Zusammenfassung:•We validate a method for extraction and quantitative determination of azoxystrobin in green beans and peas.•We perform validation according the document SANCO/12571/2013 (SANCO, 2013).•We attained the validation parameters linearity, matrix effect, LOQ, specificity, trueness and repeatability precision. This study presents a method validation for extraction and quantitative analysis of azoxystrobin residues in green beans and peas using HPLC-UV and the results confirmed by GC–MS. The employed method involved initial extraction with acetonitrile after the addition of salts (magnesium sulfate and sodium chloride), followed by a cleanup step by activated neutral carbon. Validation parameters; linearity, matrix effect, LOQ, specificity, trueness and repeatability precision were attained. The spiking levels for the trueness and the precision experiments were (0.1, 0.5, 3mg/kg). For HPLC-UV analysis, mean recoveries ranged between 83.69% to 91.58% and 81.99% to 107.85% for green beans and peas, respectively. For GC–MS analysis, mean recoveries ranged from 76.29% to 94.56% and 80.77% to 100.91% for green beans and peas, respectively. According to these results, the method has been proven to be efficient for extraction and determination of azoxystrobin residues in green beans and peas.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2015.02.106