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 |
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Format: | Artikel |
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. |
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ISSN: | 0308-8146 1873-7072 |
DOI: | 10.1016/j.foodchem.2015.02.106 |