Page Banner

United States Department of Agriculture

Agricultural Research Service

Related Topics

Steven J Lehotay
Residue Chemistry and Predictive Microbiology
SUPV RES CHEMIST

Phone: (215) 233-6433
Fax: (215) 233-6442
Room 1125.3
600 E MERMAID LN
ERRC
WYNDMOOR, PA, 19038-8598

Projects
TECHNOLOGIES FOR THE DETECTION OF CHEMICAL AND BIOLOGICAL CONTAMINANTS IN FOODS
Appropriated (D)
  Accession Number: 421012

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Use of ammonium formate in QuEChERS for high-throughput analysis of pesticides in food by fast, low-pressure gas chromatography and liquid chromatography tandem mass spectrometry - (Peer Reviewed Journal)
Gonzalez-Curbelo, M.A., Lehotay, S.J., Hernandez-Borges, J., Rodrigues-Delgado, M.A. 2014. Use of ammonium formate in QuEChERS for high-throughput analysis of pesticides in food by fast, low-pressure gas chromatography and liquid chromatography tandem mass spectrometry. Journal of Chromatography A. http://dx.doi.org/10.1016/j.chroma.2014.06.104.
Esi-Q-Tof Structural Characterization of Prominent Ms/ms Product Ions of Veterinary Drugs for Improved Regulatory Monitoring - (Proceedings) - (06-Jun-14)
Streamlined sample cleanup using combined dispersive solid-phase extraction and in-vial filtration for analysis of pesticides and environmental pollutants in shrimp Reprint Icon - (Peer Reviewed Journal)
Han, L., Sapozhnikova, Y.V., Lehotay, S.J. 2014. Streamlined sample cleanup using combined dispersive solid-phase extraction and in-vial filtration for analysis of pesticides and environmental pollutants in shrimp. Analytica Chimica Acta. 827:40-46. http://dx.doi.org/10.1016/j.aca.2014.04.005.
Structural characterization of fragment ions by electrospray ionization and Q-TOF mass spectrometry to support regulatory analysis of veterinary drug residues in foods - (Peer Reviewed Journal)
Nunez, A., Geis-Asteggiante, L., Lehotay, S.J., Lightfield, A.R. 2014. Structural characterization of fragment ions by electrospray ionization and Q-TOF mass spectrometry to support regulatory analysis of veterinary drug residues in foods. Rapid Communications in Mass Spectrometry. 28(10):1061-1081.
Analysis of pesticide residues in strawberries and soils by GC-MS/MS, LC-MS/MS and two-dimensional GC-time-of-flight MS comparing organic and integrated pest management farming - (Peer Reviewed Journal)
Fernandez, V., Lehotay, S.J., Geis-Asteggiante, L., Kwon, H., Mol, H.G., Van Der Kamp, H., Mateus, N., Delerue-Matos, C., Domingues, V.F. 2014. Analysis of pesticide residues in strawberries and soils by GC-MS/MS, LC-MS/MS and two-dimensional GC-time-of-flight MS comparing organic and integrated pest management farming. Food Control. http://dx.doi.org/10.1080/19440049.2013.865842.
Supercritical fluid chromatography-tandem mass spectrometry for the analysis of lipid A - (Peer Reviewed Journal)
Chen, Y., Lehotay, S.J., Moreau, R.A. 2013. Supercritical fluid chromatography-tandem mass spectrometry for the analysis of lipid A. Analytical Methods. DOI: 10.1039/C3AY41344F.
Rapid analysis of aminoglycoside antibiotics in bovine tissues using disposable pipette extraction and ultrahigh performance liquid chromatography - tandem mass spectrometry - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Lightfield, A.R., Nunez, A., Dutko, T., Ng, C., Bluhm, L. 2013. Rapid analysis of aminoglycoside antibiotics in bovine tissues using disposable pipette extraction and ultrahigh performance liquid chromatography - tandem mass spectrometry. Journal of Chromatography A. 1313:103-112.
Terbium-sensitized luminescence screening method for fluoroquinolones in beef serum - (Peer Reviewed Journal)
Schneider, M.J., Yun, L., Lehotay, S.J. 2013. Terbium-sensitized luminescence screening method for fluoroquinolones in beef serum. Food Additives & Contaminants. 30(4):666-669.
The use of ultra-high pressure liquid chromatography with tandem mass spectrometric detection of analysis of agrochemical residues and mycotoxines in food - challenges and applications - (Review Article)
O'Mahony, J., Clarke, L., Whelan, M., O'Kennedy, R., Lehotay, S.J., Danaher, M. 2013. The use of ultra-high pressure liquid chromatography with tandem mass spectrometric detection of analysis of agrochemical residues and mycotoxines in food - challenges and applications. Journal of Chromatography A. 1292:83-95.
Multi-class, multi-residue analysis of pesticides, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, polybrominated diphenyl ethers and novel flame retardants....mass spectrometry - (Peer Reviewed Journal)
Sapozhnikova, Y.V., Lehotay, S.J. 2013. Multi-class, multi-residue analysis of pesticides, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, polybrominated diphenyl ethers and novel flame retardants....mass spectrometry. Analytica Chimica Acta. 758:80-92.
Variability of matrix effects in liquid and gas chromatography - mass spectrometry analysis of pesticide residues after QuEChERS sample preparation of different food crops - (Peer Reviewed Journal)
Kwon, H., Lehotay, S.J., Geis-Asteggiante, L. 2012. Variability of matrix effects in liquid and gas chromatography - mass spectrometry analysis of pesticide residues after QuEChERS sample preparation of different food crops. Journal of Chromatography A. 1270:235-245.
Ruggedness testing and validation of a practical analytical method for > 100 veterinary drug residues in bovine muscle by ultrahigh performance liquid chromatography – tandem mass spectrometry - (Peer Reviewed Journal)
Geis-Asteggiante, L., Lehotay, S.J., Lightfield, A.R., Dutko, T., Ng, C., Bluhm, L. 2012. Ruggedness testing and validation of a practical analytical method for > 100 veterinary drug residues in bovine muscle by ultrahigh performance liquid chromatography – tandem mass spectrometry. Journal of Chromatography A. 1258:43-54.
A non-targeted comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry method and software for inventorying persistent and bioaccumulative contaminants in marine environments - (Peer Reviewed Journal)
Hoh, E., Dodder, N.G., Lehotay, S.J., Pangallo, K.C., Reddy, C.M., Maruya, K.A. 2012. A non-targeted comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry method and software for inventorying persistent and bioaccumulative contaminants in marine environments. Journal of Environmental Science and Technology. 46(15):8001–8008.
Evaluation of a multiclass, multiresidue liquid chromatography-tandem mass spectrometry method for analysis of 120 veterinary drugs in bovine kidney - (Peer Reviewed Journal)
Schneider, M.J., Lehotay, S.J., Lightfield, A.R. 2012. Evaluation of a multiclass, multiresidue liquid chromatography-tandem mass spectrometry method for analysis of 120 veterinary drugs in bovine kidney. Drug Testing and Analysis Journal. 4(1):91-102.
Development and validation of a streamlined method designed to detech residues of 62 veterinary drugs in bovine kidney using ultrahigh performance liquid chromatography - tandem mass spectrometry - (Peer Reviewed Journal)
Lehotay, S.J., Lightfield, A.R., Geis-Asteggiante, L., Schneider, M.J., Dutko, T., Ng, C., Bluhm, L., Mastovska, K. 2012. Development and validation of a streamlined method designed to detech residues of 62 veterinary drugs in bovine kidney using ultrahigh performance liquid chromatography - tandem mass spectrometry. Drug Testing and Analysis Journal. 4:75-90.
A multiclass multiresidue LC-MS/MS method for analysis of veterinary drugs in bovine kidney - (Proceedings)
Schneider, M.J., Lehotay, S.J., Lightfield, A.R. 2012. A multiclass multiresidue LC-MS/MS method for analysis of veterinary drugs in bovine kidney. Euroresidue Conference Proceedings. 2:515.
Effects of temperature and purity of magnesium sulfate during extraction of pesticides residues using the QuEChERS method - (Peer Reviewed Journal)
Geis-Asteggiante, L., Lehotay, S.J., Heinzen, H. 2012. Effects of temperature and purity of magnesium sulfate during extraction of pesticides residues using the QuEChERS method. Official Methods of Analysis of AOAC International. 95(5)1311-1318.
Fast,low-pressure gas chromatography triple quadrupole tandem mass spectrometry for analysis of 150 pesticide residues in fruits and vegetables - (Peer Reviewed Journal)
Koesukwiwat, U., Lehotay, S.J., Leepipatpiboon, N. 2011. Fast,low-pressure gas chromatography triple quadrupole tandem mass spectrometry for analysis of 150 pesticide residues in fruits and vegetables. Journal of Chromatography. 1218:7039-7050.
The 47th annual Florida pesticide residue workshop - (Proceedings)
Lehotay, S.J., Cochran, J. 2011. The 47th annual Florida pesticide residue workshop. Journal of Agricultural and Food Chemistry. 59:7535-7535.
Partners in research exceed the sum of the parts: partners > parts - (Trade Journal)
Lehotay, S.J. 2011. Partners in research exceed the sum of the parts: partners > parts. Inside Laboratory Management. 15(3):11.
Development and validation of a rapid method for microcystins in fish and comparing LC-MS/MS results with ELISA - (Peer Reviewed Journal)
Geis-Asteggiante, L., Lehotay, S.J., Fortis, L.L., Paoli, G., Wijey, C., Heinzen, H. 2011. Development and validation of a rapid method for microcystins in fish and comparing LC-MS/MS results with ELISA. Analytical and Bioanalytical Chemistry. 401:2617-2630.
Qualitative aspects in the analysis of pesticide residues in fruits and vegetables using fast, low-pressure gas chromatography - time-of-flight mass spectrometry - (Peer Reviewed Journal)
Lehotay, S.J., Koesukwiwat, U., Van Der Kamp, H., Mol, H.G., Leepipatpiboon, N. 2011. Qualitative aspects in the analysis of pesticide residues in fruits and vegetables using fast, low-pressure gas chromatography - time-of-flight mass spectrometry. Journal of Agricultural and Food Chemistry. 59:7544-7556.
Extension of the QuEChERS Method for Pesticide Residues in Cereals to Flaxseeds, Peanuts, and Doughs - (Peer Reviewed Journal)
Koesukwiwat, U., Lehotay, S.J., Mastovska, K., Dorweiler, K.J., Leepitpatpiboon, N. 2010. Extension of the QuEChERS Method for Pesticide Residues in Cereals to Flaxseeds, Peanuts, and Doughs. Journal of Agricultural and Food Chemistry. 58:5950-5958.
A dual validation approach to detect anthelmintic residues in bovine liver over an extended concentration range - (Peer Reviewed Journal)
Kinsella, B., Whelan, M., Cantwell, H., Mccormack, M., Furey, A., Lehotay, S.J., Danaher, M. 2010. A dual validation approach to detect anthelmintic residues in bovine liver over an extended concentration range. Talanta. 83:14-24.
Issues in mass spectrometry between bench chemists and regulatory laboratory managers - (Peer Reviewed Journal)
Heller, D.N., Lehotay, S.J., Matos, P.A., Hammack, W., Fernandez-Alba, A.R. 2010. Issues in mass spectrometry between bench chemists and regulatory laboratory managers. Journal of Association of Official Analytical Chemists International. 93(5):1625-1632.
Time-resolved luminescence screening method for enrofloxacin in beef serum - (Abstract Only)
Schneider, M.J., Yun, L., Lehotay, S.J. 2010. Time-resolved luminescence screening method for enrofloxacin in beef serum [Abstract]. 31.
Routine approach to qualitatively screen for 300 pesticides and quantify those frequently detected in fruits and vegetables using liquid chromatography tandem mass spectrometry - (Peer Reviewed Journal)
Kmellar, B., Abranko, L., Fodor, P., Lehotay, S.J. 2010. Routine approach to qualitatively screen for 300 pesticides and quantify those frequently detected in fruits and vegetables using liquid chromatography tandem mass spectrometry. Journal of Chromatography A. 27(10):1415-1430.
High throughput analysis of 150 pesticides in fruits and vegetables using QuEChERS and low-pressure gas chromatography – time-of-flight - (Peer Reviewed Journal)
Koesukwiwat, U., Lehotay, S.J., Miao, S., Leepipatpiboon, N. 2010. High throughput analysis of 150 pesticides in fruits and vegetables using QuEChERS and low-pressure gas chromatography – time-of-flight. Journal of Chromatography A. 1217:6692-6703.
QuEChERS, a sample preparation technique that is “catching on”: an up-to-date interview with its inventors - (Trade Journal)
Lehotay, S.J., Anastassiades, M., Majors, R. 2010. QuEChERS, a sample preparation technique that is “catching on”: an up-to-date interview with its inventors. LC GC North America. 28(7):504-516.
The QuEChERS revolution - (Trade Journal)
Lehotay, S.J., Anastassiades, M., Majors, R. 2010. The QuEChERS revolution. LC GC Europe. 23.
Determination of anthelmintic drug residues in milk using UPLC-MS/MS with rapid polarity switching - (Peer Reviewed Journal)
Whelan, M., Kinsella, B., Furey, A., Cantwell, H., Lehotay, S.J., Danaher, M. 2010. Determination of anthelmintic drug residues in milk using UPLC-MS/MS with rapid polarity switching. Journal of Chromatography A. 1217(27):4612-4622.
Multi-Analyst, Multi-Matrix Performance of the QuEChERS Approach for Pesticide Residues in Foods and Feeds Using LC-MS/MS Analysis with Different Calibration Techniques - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Lightfield, A.R., Gates, R.A. 2010. Multi-Analyst, Multi-Matrix Performance of the QuEChERS Approach for Pesticide Residues in Foods and Feeds Using LC-MS/MS Analysis with Different Calibration Techniques. Journal of Association of Official Analytical Chemists International. 93(2):355-367.
Comparison of QuEChERS sample preparation methods for the analysis of pesticide residues in fruits and vegetables - (Peer Reviewed Journal)
Lehotay, S.J., Son, K.A., Kwon, H., Koesukwiwat, U., Fu, W., Mastovska, K., Hoh, E. 2010. Comparison of QuEChERS sample preparation methods for the analysis of pesticide residues in fruits and vegetables. Journal of Chromatography A. 1217:2548-2560.
Sample preparation approaches for the analysis of pesticide residues in olives and olive oils - (Book / Chapter)
Cunha, S.C., Lehotay, S.J., Mastovska, K., Fernandes, J.O., Oliveira, M. 2010. Sample preparation approaches for the analysis of pesticide residues in olives and olive oils. In: Preedy, V.R., Watson, R.R., editors. Olives and Olive in Health and Disease Prevention. Oxford: Academic Press p. 653-666.
Pesticide Multiresidue Analysis in Cereal Grains Using Modified QuEChERS Method Combined with Automated Direct Sample Introduction GC-TOFMS and UPLC-MS/MS Techniques - (Peer Reviewed Journal)
Mastovska, K., Dorweiler, K., Lehotay, S.J., Wegscheid, J.S., Szpylka, K.A. 2010. Pesticide Multiresidue Analysis in Cereal Grains Using Modified QuEChERS Method Combined with Automated Direct Sample Introduction GC-TOFMS and UPLC-MS/MS Techniques. Journal of Agricultural and Food Chemistry. 58:5959-5972.
QuEChERS sample preparation approach for mass spectrometric analysis of pesticide residues in foods - (Book / Chapter)
Lehotay, S.J. 2011. QuEChERS sample preparation approach for mass spectrometric analysis of pesticide residues in foods. In: Zweigenbaum, J., editor. Mass Spectronmetry in Food Safety: Methods and Protocols. Methods in Molecular Biology. Springer Science+Business Media. Humana Press. 747. DOI: 10.1007/978-1-61779-136-9_4.
Blind Analysis of Fortified Pesticide Residues in Carrot Extracts using GC-MS to Evaluate Qualitative and Quantitative Performance - (Peer Reviewed Journal)
Lehotay, S.J., Gates, R.A. 2009. Blind Analysis of Fortified Pesticide Residues in Carrot Extracts using GC-MS to Evaluate Qualitative and Quantitative Performance. Journal of Separation Science. 32:3706-3719.
Capabilities of Direct Sample Introduction - Comprehensive Two-Dimensional Gas Chromatgraphy-Time-of-Flight Mass Spectrometry to Analyze Organic Chemicals of Interest in Fish Oils - (Peer Reviewed Journal)
Hoh, E., Lehotay, S.J., Mastovska, K., Ngo, H., Vetter, W., Pangallo, K.C., Reddy, C.M. 2009 Capabilities of Direct Sample Introduction - Comprehensive Two-Dimensional Gas Chromatgraphy-Time-of-Flight Mass Spectrometry to Analyze Organic Chemicals of Interest in Fish Oils. Environmental Science and Technology. 43:3240-3247.
Simultaneous quantitation of multiple classes of organohalogen compounds in fish oils with direct sample introduction comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry - (Peer Reviewed Journal)
Hoh, E., Lehotay, S.J., Mastovska, K., Ngo, H., Vetter, W., Pangallo, K., Reddy, C. 2009. Simultaneous quantitation of multiple classes of organohalogen compounds in fish oils with direct sample introduction comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry. Journal of Agricultural and Food Chemistry. 57(7):2653-2660.
Identification and confirmation of chemical residues by chromatography-mass spectrometry and other techniques - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Amirav, A., Fialkov, A.B., Alon, T., Martos, P.A., Kok, A., Fernandez-Alba, A.R. 2009. Identification and confirmation of chemical residues by chromatography-mass spectrometry and other techniques. Trends in Analytical Chemistry. 27(11):1070-1090.
Comparison of screening methods for antibiotics in beef kidney juice and serum - (Peer Reviewed Journal)
Schneider, M.J., Mastovska, K., Lehotay, S.J., Lightfield, A.R., Kinsella, B., Shultz, C.2009. Comparison of screening methods for antibiotics in beef kidney juice and serum. Analytica Chimica Acta. 637:290-297.
New Method for the Analysis of Flukicide and Other Anthelmintic Residues in Bovine Milk and Liver using LC-MS/MS - (Peer Reviewed Journal)
Kinsella, B., Lehotay, S.J., Mastovska, K., Lightfield, A.R., Furey, A., Danaher, M. 2009. New Method for the Analysis of Flukicide and Other Anthelmintic Residues in Bovine Milk and Liver using Liquid Chromatography - Tandem Mass Spectrometry. Anal. Chim. Acta. (637):196-207.
Ultra-Trace Analysis of Nine Macrolides, including Tulathromycin A (Draxxin), in Edible Animal Tissues with Mini-Column Liquid Chromatography Tandem Mass Spectrometry - (Peer Reviewed Journal)
Martos, P.A., Lehotay, S.J., Shurmer, B. 2008. Ultra-Trace Analysis of Nine Macrolides, including Tulathromycin A (Draxxin), in Edible Animal Tissues with Mini-Column Liquid Chromatography Tandem Mass Spectrometry. Journal of Agriculture and Food Chemistry. 56(19):8844-8850.
New Method for Analysis of Multiple Anthelmintic Residues in Animal Tissue - (Proceedings)
Kinsella, B., Lehotay, S.J., Lightfield, A.R., Mastovska, K., Furey, A., Danaher, M. 2008. New Method for Analysis of Multiple Anthelmintic Residues in Animal Tissue. Euroresidue Conference Proceedings. p.1147-1152.
A Comparison of the FAST, Premi® and KIS (TradeMark) Tests for Detection of Antibiotics in Beef Kidney Juice and Serum - (Proceedings)
Schneider, M.J., Lehotay, S.J., Mastovska, K., Lightfield, A.R., Kinsella, B., Shultz, C. 2008. A comparison of the fast, premi® and kis (trademark) tests for detection of antibiotics in beef kidney juice and serum. Proceedings of Euroresidue VI - Residues of Veterinary Drugs in Food Conference. p.389-394.
Evaluation of automated direct sample introduction with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry for the screening analysis of dioxins of fish oil - (Peer Reviewed Journal)
Hoh, E., Lehotay, S.J., Mastovska, K., Huwe, J.K. 2008. Evaluation of automated direct sample introduction with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry for the screening analysis of dioxins of fish oil. Journal of Chromatography A. 1201(1):69-77.
A Comparison of the FAST, Premi® and KIS(TradeMark) Tests for Screening Antibiotic Residues in Beef Kidney Juice and Serum - (Peer Reviewed Journal)
Schneider, M.J., Lehotay, S.J. 2008. A Comparison of the FAST, Premi® and KIS(TradeMark) Tests for Screening Antibiotic Residues in Beef Kidney Juice and Serum. Analytical and Bioanalytical Chemistry. 390(7):1775-1779.
Rapid analysis of multiple pesticide residues in fruit-based baby food using programmed temperature vaporiser injection–low pressure gas chromatography–high-resolution time-of-flight mass spectrometry - (Peer Reviewed Journal)
Cajka, T., Hajslova, J., Lacina, O., Mastovska, K., Lehotay, S.J. 2008. Rapid analysis of multiple pesticide residues in fruit-based baby food using programmed temperature vaporiser injection–low pressure gas chromatography–high-resolution time-of-flight mass spectrometry. Journal of Chromatography A. 1186:281-294.
Validation of an Efficient Method for the Determination of Pesticide Residues in Fruits and Vegetables Using Ethyl Acetate for Extraction - (Peer Reviewed Journal)
Aysal, P., Ambrus, A., Lehotay, S.J., Cannavan, A. 2007. Validation of an Efficient Method for the Determination of Pesticide Residues in Fruits and Vegetables Using Ethyl Acetate for Extraction. Journal of Environmental Science and Health B. 42:481-490.
Determination of Pesticide Residues in Foods by Acetonitrile Extraction and Partitioning with Magnesium Sulfate: Collaborative Study - (Peer Reviewed Journal)
Lehotay, S.J. 2007. Determination of Pesticide Residues in Foods by Acetonitrile Extraction and Partitioning with Magnesium Sulfate: Collaborative Study. Journal of the Association of Official Analytical Chemists.90:485-520
Optimization of separation and detection conditions for comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry analysis of polychlorinated dibenzo-p-dioxins and dibenzofurans - (Peer Reviewed Journal)
Hoh, E., Mastovska, K., Lehotay, S.J. 2007. Optimization of separation and detection for comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry analysis of polychlorinated dibenzo-p-dioxins and dibenzofurans. Journal of Chromatography A. 1145:210-221.
Evalualtion of the QuEChERS sample preparation approach for the analysis of pesticide residues in olives - (Peer Reviewed Journal)
Cunha, S., Lehotay, S.J., Mastovska, K., Fernandes, J.O., Oliveira, M.P. 2007. Evalualtion of the QuEChERS sample preparation approach for the analysis of pesticide residues in olives. Journal of Separation Science. 30:620-632.
Rapid Sample Preparation Method for Lc-Ms/ms Or Gc-Ms Analysis for Acrylamide in Various Food Matrices - (Peer Reviewed Journal)
Mastovska, K., Lehotay, S.J. 2006. Rapid sample preparation method for lc-ms/ms or gc-ms analysis for acrylamide in various food matrices. Journal of Agricultural and Food Chemistry. 54:7001-7008
Rapid Analysis of Chemical Residues in Food - (Abstract Only)
Lehotay, S.J. 2006. RAPID ANALYSIS OF CHEMICAL RESIDUES IN FOOD. Proceedings of Pittcon Meeting.
A Simple and Inexpensive "solvent in Silicone Tube Extraction" Approach and Its Evaluation in the Gas Chromatographic Analysis of Pesticdes in Fruits and Vegetables - (Peer Reviewed Journal)
Janska, M., Lehotay, S.J., Mastovska, K., Hajslova, J., Alon, T., Amirav, A. 2006. A simple and inexpensive "solvent in silicone tube extraction" approach and its evaluation in the gas chromatographic analysis of pesticdes in fruits and vegetables. Journal of Separation Science.(29)66-88.
Study of a Combination of Analyte Protectants to Overcome Matrix Effects in Routine Gc Analysis of Pesticide Residues in Food Matrices - (Peer Reviewed Journal)
Mastovska, K., Lehotay, S.J., Anastassiades, M. 2005. Study of a combination of analyte protectants to overcome matrix effects in routine gc analysis of pesticide residues in food matrices. Analytical Chemistry. 77(24):129-8137
Use of Automated Direct Sample Introduction with Analyte Protectants in the Gc-Ms Analysis of Pesticide Resides - (Peer Reviewed Journal)
Cajka, T., Mastovska, K., Lehotay, S.J., Hajslova, J. 2005. Use of automated direct sample introduction with analyte protectants in the gc-ms analysis of pesticide resides. Journal of Separation Science. 28. pp. 1048-1060.
Detecting Veterinary Drug Residues in Feed and Cattle - (Book / Chapter)
Lehotay, S.J., Mastovska, K., Thiex, N. 2005. Detecting veterinary drug residues in feed and cattle. Improving the safety of fresh meat. J. Sofos (Ed.) Woodhead Publishing. Cambridge, UK. p.102-131.
Confirmatory and Quantitative Analysis of B-Lactam Antibiotics in Bovine Kidney Tissue by Dispersive Solid-Phase Extraction and Liquid Chromatography-Tandem Mass Spectrometry - (Peer Reviewed Journal)
Fagerquist, C.K., Lightfield, A.R., Lehotay, S.J. 2005. Confirmatory and quantitative analysis of b-lactam antibiotics in bovine kidney tissue by dispersive solid-phase extraction and liquid chromatography-tandem mass spectrometry. Analytical Chemistry 5(77).1473-1482.
Review of modern practice of gas chromatography - (Other)
Lehotay, S.J. 2005. Review of modern practice of gas chromatography. 4TH Edition of Inside Laboratory Management. Jan/Feb. p.17-18.
Evaluation of Two Fast and Easy Methods for Pesticide Residue Analysis in Fatty Food Matrices - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Jong, Y. 2005. Evaluation of two fast and easy methods for pesticide residue analysis in fatty food matrices. Journal of Association of Official Analytical Chemists International. 88. pp. 630-638.
Use of Buffering to Improve Results of Problematic Pesticides in a Fast and Easy Method for Residue Analysis of Fruits and Vegetables - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Lightfield, A.R. 2005. Use of buffering to improve results of problematic pesticides in a fast and easy method for residue analysis of fruits and vegetables. Journal of Association of Official Analytical Chemists International. 88.pp. 615-629.
Validation of a Fast and Easy Method for the Determination of 229 Pesticide Residues in Fruits and Vegetables Using Gas and Liquid Chromatography and Mass Spectrometric Detection - (Peer Reviewed Journal)
Lehotay, S.J., De Kok, A., Hiemstra, M., Van Bodegraven, P. 2005. Validation of a fast and easy method for the determination of 229 pesticide residues in fruits and vegetables using gas and liquid chromatography and mass spectrometric detection. Journal of Association of Official Analytical Chemists International. 2005. v. 88. p. 595-614.
Ruggedness and Other Performance Characteristics of Low-Pressure Gas Chromatography-Mass Spectrometry for the Fast Analysis of Multiple Pesticide Residues in Food Crops - (Peer Reviewed Journal)
Mastovska, K., Hajslova, J., Lehotay, S.J. 2004. Ruggedness and other performance characteristics of low-pressure gas chromatography-mass spectrometry for the fast analysis of multiple pesticide residues in food crops. Journal of Chromatography A. 1054. 2004. p. 335-349.
Quick, Easy, Cheap, Effective, Rugged and Safe (Quechers) Approach for Determining Pesticide Residues - (Book / Chapter)
Lehotay, S.J. 2005 QUICK, EASY, CHEAP, EFFECTIVE, RUGGED AND SAFE (QUECHERS) APPROACH FOR DETERMINING PESTICIDE RESIDUES. METHODS IN BIOTECHNOLOGY. PESTICIDE PROTOCOLS. (19):239-261.
Determination of Pesticide Residues - (Book / Chapter)
Lehotay, S.J., Mastovska, K. Determination of pesticide residues. Methods of Analysis of Food Components and Additives. Taylor & Francis, Boca Raton, FL. 2005. pp. 329-359.
Evaluation of Common Organic Solvents for Gas Chromatographic Analysis and Stability of Multiclass Pesticide Residues - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K. Evaluation of common organic solvents for gas chromatographic analysis and stability of multiclass pesticide residues. Journal of Chromatography A. 2004 p. 259-272.
Evaluation of Common Organic Solvents for Gas Chromatographic Analysis and Stability of Multiclass Pesticide Residues - (Abstract Only)
Mastovska, K., Lehotay, S.J. 2004. Evaluation of common organic solvents for gas chromatographic analysis and stability of multiclass pesticide residues. Meeting Abstract.
A Rapid Fluorescence Screening Assay for Tetracyclines in Chicken Muscle - (Peer Reviewed Journal)
Schneider, M.J., Lehotay, S.J. 2004. A rapid fluorescence screening assay for tetracyclines in chicken muscle. Journal of Association of Official Analytical Chemists International.
Europium-Sensitized Luminescence Determination of Oxytetracycline in Catfish Muscle - (Peer Reviewed Journal)
Chen, G., Schneider, M.J., Darwish, A.M., Lehotay, S.J., Freeman, D.W. 2004. Europium-sensitized luminescence determination of oxytetracycline in catfish muscle. Talanta. 64. pp. 252-257.
Application of Analyte Protectants to Improve Accuracy and Ruggedness of Routine Gc-Ms Analysis of Multiple Pesticide Residues in Food Matrices - (Abstract Only)
Mastovska, K., Lehotay, S.J., Anastassiades, M. 2004. Application of analyte protectants to improve accuracy and ruggedness of routine gc-ms analysis of multiple pesticide residues in food matrices. Meeting Abstract.
Evaluation of Analyte Protectants to Improve Gas Chromatographic Analysis of Pesticides - (Peer Reviewed Journal)
ANASTASSIADES, M., MASTOVSKA, K., LEHOTAY, S.J. EVALUATION OF ANALYTE PROTECTANTS TO IMPROVE GAS CHROMATOGRAPHIC ANALYSIS OF PESTICIDES. JOURNAL OF CHROMATOGRAPHY A. v. 1015. p. 163-184. 2003.
Application of Gas Chromatography in Food Analysis - (Review Article)
LEHOTAY, S.J., HAJSLOVA, J. APPLICATION OF GAS CHROMATOGRAPHY IN FOOD ANALYSIS. TRENDS IN ANALYTICAL CHEMISTRY. v. 21. # 9-10.
Approaches and Recommendations to Validate Ms Confirmation Criteria for Veterinary Drug Residues in Food - (Abstract Only)
LEHOTAY, S.J., SCHNEIDER, M.J., FAGERQUIST, C.K., LIGHTFIELD, A.R. APPROACHES AND RECOMMENDATIONS TO VALIDATE MS CONFIRMATION CRITERIA FOR VETERINARY DRUG RESIDUES IN FOOD. 116TH AOAC INTERNATIONAL ANNUAL MEETING. ABSTRACT. 2002. P. 80.
Volatile Sulfur Compounds in Irradiated Pre-Cooked Turkey Breast Analyzed with Pulsed Flame Photometric Detection - (Peer Reviewed Journal)
FAN, X., SOMMERS, C.H., THAYER, D.W., LEHOTAY, S.J. VOLATILE SULFUR COMPOUNDS IN IRRADIATED PRE-COOKED TURKEY BREAST ANALYZED WITH PULSED FLAME PHOTOMETRIC DETECTION. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY. 2002. V. 50. P. 4257-4261.
The Fate of Currently Used Pesticides in Two Chesapeake Bay Tributaries - (Abstract Only) - (15-Nov-99)
Investigating the Impacts of Agro-Chemicals on Oysters and Water in Tributaries of the Chesapeake Bay - (Abstract Only) - (15-Nov-99)
Development of Analytical Methods for Multiple Pesticides in Oyster, Sediment, and River Water - (Abstract Only) - (20-Dec-98)
Meeting Challenges in the Development of Analytical Methods for Pesticide Residues in Fruits and Vegetables. - (Abstract Only) - (01-Apr-98)
Why Are Old Methods Hanging Around? - (Trade Journal) - (31-Mar-98)
ARS News Articles
Last Modified: 9/21/2014
Footer Content Back to Top of Page