Posters
« Back
Automated micro-SPE Clean-up of QuEChERS Extracts for Multi-Residue Pesticide Analysis
EP25223
Automated micro-SPE Clean-up of QuEChERS Extracts for Multi-Residue Pesticide Analysis
Submitted on 11 Jan 2017

Guenter Boehm1, Reto Bolliger1, Hans-Joachim Hübschmann2, Bruce D. Morris3, Richard B. Schriner3
1CTC Analytics AG, Zwingen, Switzerland; 2CTC Analytics AG, Osaka, Japan; 3Hill Laboratories, Hamilton East, New Zealand
This poster was presented at EPRW 2016
Poster Views: 220
View poster »
Poster Abstract
The extraction and clean-up of pesticides from food still poses challenges due to the high number and difference in chemical nature of the compounds embedded in food matrices of high complexity and highly varying compositions. Due to their differences in polarity compounds are analysed by GC or LC separation typically using MS/MS or accurate mass instrumentation.
In recent years the QuEChERS (Quick Easy Cheap Effective Rugged Safe) methodology [1] has been introduced in many food safety laboratories for pesticides. While the extraction step has been well standardised (AOAC 2007.1; CEN 15662) the clean-up of the resulting extracts still differs widely for different matrices and laboratories. The potential for high sample throughput using the QuEChERS extraction is impeded by laborious manual sample preparation. Analytical limitations come from the dispersive SPE (dSPE) step used in the QuEChERS methodology with high matrix load and reduced recoveries for low polar pesticides from lipid matrix foods. In consequence several matrix dependent clean-up strategies are found in the literature to overcome matrix effects.
An automated procedure for the clean-up of QuEChERS extracts as well as typical results obtained with it are presented. With the versatile methodology an almost matrix independent, robust and efficient clean-up solution for extracts can be realized [2,3].

[1] Anastassiades M, Lehotay SJ, Stajnbaher D, Schenck FJ; J. AOAC Int. 2003, 86, 412−31. [2] Morris BD, Schriner RB; J. Agric. Food Chem. 2015, 63, 5107-19. [3] Lehotay SJ, Han L, Sapozhnikova Y; Chromatographia 2016, 79, 1113-30Report abuse »
Questions
Ask the author a question about this poster.
Ask a Question »

Creative Commons

Related Posters


Exploration of High-Temperature Petroleum Analysis Using Comprehensive Two=Dimensional Gas Chromatography and Time-of-Flight Mass Spectrometry
Christina Kelly, Joseph Binkley, Lorne Fell, David Alonso

Mechanism of Treatment-induced Drug Resistance in Lung Cancer
Mark Howell a,b*, Ryan Green a,b, Eva Samal a,b, Rajesh Nair d,g, Stanley Stevens f, Jit Banerjee a, Shyam Mohapatra b,c,d,e, and Subhra Mohapatra a,b,e

A Tissue-based Proteomic Study of VEGFR2 in Human Term Placentas Revealed its Association with Pyruvate Dehydrogenase and MDMX
Maja Okuka, Rachel G. Sinkey, Dale Chaput, Stanley Stevens, Thora Steffensen, Angel Alsina, Umt Kayisli, John Tsibris

TYMS Dysregulation is a Molecular Switch and Tumorigenic Driver in Early Breast Cancer
Barry J Barclay PhD

A Tissue-based Proteomic Study of VEGFR2 in Human Term Placentas Revealed its Association with Pyruvate Dehydrogenase and MDMX
Maja Okuka, Rachel G. Sinkey, Dale Chaput, Stanley Stevens, Thora Steffensen, Angel Alsina, Umt Kayisli, John Tsibris

 
Keep up to date
with the latest posters
Receive World Wide Exposure
Increase Collaboration
Close
Close
Premium CrownJOIN THE EPOSTERS COMMUNITY!