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- Publications
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Comparison of QuEChERS sample preparation methods for the analysis of pesticide residues in fruits and vegetables.
- S. Lehotay, K. A. Son, +5 authors N. Leepipatpiboon
- Chemistry, Medicine
- Journal of chromatography. A
- 16 April 2010
This article describes the comparison of different versions of an easy, rapid and low-cost sample preparation approach for the determination of pesticide residues in fruits and vegetables by… Expand
Evaluation of common organic solvents for gas chromatographic analysis and stability of multiclass pesticide residues.
- K. Maštovská, S. Lehotay
- Chemistry, Medicine
- Journal of chromatography. A
- 25 June 2004
In this study, we evaluated the suitability of six common organic solvents for gas chromatographic (GC) analysis of pesticides. Three of these, acetone, acetonitrile (MeCN) and ethyl acetate (EtAc),… Expand
Rapid sample preparation method for LC-MS/MS or GC-MS analysis of acrylamide in various food matrices.
- K. Maštovská, S. Lehotay
- Chemistry, Medicine
- Journal of agricultural and food chemistry
- 18 August 2006
A fast and easy sample preparation procedure for analysis of acrylamide in various food matrices was developed and optimized. In its first step, deuterated acrylamide internal standard is added to 1… Expand
Evaluation of two fast and easy methods for pesticide residue analysis in fatty food matrixes.
- S. Lehotay, K. Maštovská, S. Yun
- Medicine, Chemistry
- Journal of AOAC International
- 1 March 2005
Two rapid methods of sample preparation and analysis of fatty foods (e.g., milk, eggs, and avocado) were evaluated and compared for 32 pesticide residues representing a wide range of physicochemical… Expand
Evaluation of the QuEChERS sample preparation approach for the analysis of pesticide residues in olives.
- S. Cunha, S. Lehotay, K. Maštovská, J. Fernandes, M. Beatriz, P. P. Oliveira
- Chemistry, Medicine
- Journal of separation science
- 1 March 2007
This paper describes the use of a quick, easy, cheap, effective, rugged, and safe (QuEChERS) method for extraction and cleanup of 16 pesticide residues of interest in olives and olive oil. These… Expand
Evaluation of analyte protectants to improve gas chromatographic analysis of pesticides.
- M. Anastassiades, K. Maštovská, S. Lehotay
- Chemistry, Medicine
- Journal of chromatography. A
- 10 October 2003
A common problem in gas chromatography (GC) applications is the analyte losses and/or peak tailing due to undesired interactions with active sites in the inlet and column. Analytes that give poor… Expand
Pesticide multiresidue analysis in cereal grains using modified QuEChERS method combined with automated direct sample introduction GC-TOFMS and UPLC-MS/MS techniques.
- K. Maštovská, Kelly J. Dorweiler, S. Lehotay, Jennifer S Wegscheid, Kelli A Szpylka
- Chemistry, Medicine
- Journal of agricultural and food chemistry
- 26 May 2010
The QuEChERS (quick, easy, cheap, effective, rugged, and safe) sample preparation method was modified to accommodate various cereal grain matrices (corn, oat, rice, and wheat) and provide good… Expand
Use of buffering and other means to improve results of problematic pesticides in a fast and easy method for residue analysis of fruits and vegetables.
- S. Lehotay, K. Maštovská, A. Lightfield
- Chemistry, Medicine
- Journal of AOAC International
- 1 March 2005
A modification that entails the use of buffering during extraction was made to further improve results for certain problematic pesticides (e.g., folpet, dichlofluanid, chlorothalonil, and… Expand
Mycotoxins in Plant-Based Dietary Supplements: Hidden Health Risk for Consumers.
- Zdenka Veprikova, M. Zachariasova, +7 authors J. Hajslova
- Chemistry, Medicine
- Journal of agricultural and food chemistry
- 21 July 2015
Mycotoxin contamination of dietary supplements represents a possible risk for human health, especially in the case of products intended for people suffering from certain health conditions. The aim of… Expand
Practical approaches to fast gas chromatography-mass spectrometry.
- K. Maštovská, S. Lehotay
- Chemistry, Medicine
- Journal of chromatography. A
- 6 June 2003
Fast gas chromatography-mass spectrometry (GC-MS) has the potential to be a powerful tool in routine analytical laboratories by increasing sample throughput and improving laboratory efficiency.… Expand