期刊论文详细信息
Química Nova
Otimização e validação de método empregando quechers modificado e lc-esi-ms/ms para determinação de agrotóxicos em cebola
Sherol Acosta Rodrigues2  Sergiane Souza Caldas2  Eliana Badiale Furlong2  Ednei Gilberto Primel2  Renato Zanella1 
[1] ,Universidade Federal do Rio Grande Escola de Química e Alimentos Rio Grande RS ,Brasil
关键词: pesticides;    QuEChERS;    LC-ESI-MS/MS;   
DOI  :  10.1590/S0100-40422011000500010
来源: SciELO
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【 摘 要 】

An evaluation of the pesticides extraction from onion using a modern sample preparation method (QuEChERS) and determination by liquid chromatography tandem mass spectrometry was carried out. All the calibration curves showed r>0.99. The recoveries ranged between 61.8 and 120.0% with relative standard deviation lower than 20% for all compounds. Due to the occurrence of matrix effect, the quantification was performed using matrix-matched calibration. The limits of quantification of the method were between 0.0005 and 0.05 mg kg-1. The method shows the advantages of not require the clean-up step and consume low volume of organic solvents, decreasing time, costs and residues.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License

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