Automated QuEChERS tips for analysis of pesticide residues in fruits and vegetables by GC-MS

Pakritsadang Kaewsuya; William E Brewer; Jon Wong; Stephen L Morgan

doi:10.1021/jf304648h

Automated QuEChERS tips for analysis of pesticide residues in fruits and vegetables by GC-MS

J Agric Food Chem. 2013 Mar 13;61(10):2299-314. doi: 10.1021/jf304648h. Epub 2013 Feb 6.

Authors

Pakritsadang Kaewsuya¹, William E Brewer, Jon Wong, Stephen L Morgan

Affiliation

¹ Department of Chemistry and Biochemistry, University of South Carolina , 631 Sumter Street, Columbia, South Carolina 29208, United States.

PMID: 23331058
DOI: 10.1021/jf304648h

Abstract

This paper reports the development of an automated method of QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) using pipet tips fitted with filtration screens and containing primary-secondary amine, magnesium sulfate, and graphitized carbon black. These tips are referred to as "QuEChERS Tips". Using loosely contained sorbent, dispersive solid phase extraction (dSPE) cleanup was performed with the QuEChERS Tips and automation. The main advantage of the QuEChERS Tips is that they are readily automated because this dSPE method does not require centrifugation. High recoveries (70-117%) and good reproducibilities (<12%) are shown for over 200 pesticides using automated QuEChERS Tips and GC-MS in various sample matrices.

Publication types

Evaluation Study

MeSH terms

Automation
Food Contamination / analysis
Fruit / chemistry*
Gas Chromatography-Mass Spectrometry / methods
Pesticide Residues / analysis*
Pesticide Residues / isolation & purification*
Solid Phase Extraction / instrumentation
Solid Phase Extraction / methods*
Vegetables / chemistry*

Substances

Pesticide Residues