Office of Research and Development Publications

Records 1 to 29 of 29

OSEMWENGIE, L. I., G. SOVOCOOL, AND J. Morgan. The Mass Spectrometric Ortho Effect Studied for All 209 PCB Congeners. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES. Elsevier Science Ltd, New York, NY, 352:51-64, (2015).
Osemwengie, L. AND J. Morgan. Determination of levels of polychlorinated biphenyls (PCBs) present in caulk and window glazing material samples from older buildings. Presented at SETAC North America 36th Annual Meeting, Salt Lake City, UT, November 01 - 05, 2015.
Osemwengie, L. Distinguishing PCB Isomeric Congeners with their Gas Chromatographic and Mass Spectrometric Ortho Effect using Comprehensive Gas Chromatography. Presented at Site Evaluation Tools and Emerging Technologies, Ashburn, VA, October 19 - 23, 2015.
Osemwengie, L., Wayne Sovocool, J. Morgan, A. Batt, AND Jim Lazorchak. Levels of Synthetic Musk Compounds in the United States National Rivers and Streams Using Gas Chromatography and Mass Spectrometry. Presented at Texas Southern University, Houston, TX, November 13 - 15, 2013.
Mottaleb, A. M., L. I. OSEMWENGIE, R. M. Islam, AND G. SOVOCOOL. Identification of Bound Nitro Musk-Protein Adduct in Fish Liver By Gas Chromatography-Mass Sectrometry: Biotransformation, Dose-Response and Toxicokinetics of Nitro Musk Metabolites Protein Adducts in Trout Liver as Biomarker of Exposure. AQUATIC TOXICOLOGY. Elsevier Science Ltd, New York, NY, 106(107):164-172, (2012).
OSEMWENGIE, L. I. AND G. SOVOCOOL. Evaluation of Comprehensive 2-D Gas Chromatography-Time-Of-Flight Mass Spectrometry for 209 Chlorinated Biphenyl Congeners in Two Chromatographic Runs. CHROMATOGRAPHY RESEARCH INTERNATIONAL. SAGE-Hindawi Access to Research , London, Uk, 2011:1-14, (2011).
OSEMWENGIE, L. I. PHARMACEUTICALS AND PERSONAL CARE PRODUCTS IN THE ENVIRONMENT: OVERVIEW OF CHEMISTRY, SOURCES, AND FATE. Presented at North Carolina Regional Chapter, Society of Toxicology, Research Triangle Park, NC, October 23, 2008.
OSEMWENGIE, L. I. AND G. SOVOCOOL. Evaluation of Enhanced Comprehensive 2-D Gas Chromatography-Time-Of-Flight Mass Spectrometry for the Separation of Recalcitrant Polychlorinated Biphenyl Isomers. Presented at Society for Environmental Toxicology and Chemistry North American 2009 Annual Meeting, New Orleans, LA, November 19 - 23, 2009.
OSEMWENGIE, L. I. DETERMINATION OF SYNTHETIC MUSK COMPOUNDS IN MUNICIPAL WASTEWATER AND ESTIMATING BIOTA EXPOSURE IN THE RECEIVING WATERS. Presented at American Chemical Society Western Regional Meeting, Las Vegas, NV, September 24, 2008.
OSEMWENGIE, L. I., G. SOVOCOOL, AND M. Libardoni. ANALYSIS OF 209 CHLORINATED BIPHENYL CONGENERS USING COMPREHENSIVE TWO-DIMENSIONAL GAS CHROMATOGRAPHY-TIME-OF-FLIGHT MASS SPECTROMETRY IN THE 1-D MODE FOLLOWED BY THE 2-D MODE. Presented at American Chemical Society Western Regional Meeting, Las Vegas, NV, September 24, 2008.
OSEMWENGIE, L. I. AND G. SOVOCOOL. Analysis of 209 chlorinated biphenyl congeners using comprehensive two-dimensional gas chromatography- time-of-flight mass spectrometry in the 1-D mode followed by the 2-D mode. Presented at Society for Environmental Toxicology and Chemistry National Meeting, New Orleans, LA, November 20, 2009.
BLOCKSOM, K. A., A. BATT, J. M. LAZORCHAK, L. I. OSEMWENGIE, A. DELINSKY, A. B. LINDSTROM, M. STRYNAR, M. MILLS, S. Nakayama, T. M. JICHA, M. Vazquez, AND D. W. BOLGRIEN. National rivers and streams assessment: fish tissue contaminants. Presented at SWIMS Conference, Chicago, IL, February 09 - 11, 2009.
OSEMWENGIE, L. I. LEVELS OF SYNTHETIC MUSK COMPOUNDS IN MUNICIPAL WASTEWATER FOR ESTIMATING BIOTA EXPOSURE IN RECEIVING WATER. Presented at SETAC North America 28th Annual Meeting, Milwaukee, WI, November 11 - 15, 2007.
OSEMWENGIE, L. I. LEVELS OF SYNTHETIC MUSK COMPOUNDS IN MUNICIPAL WASTEWATER FOR ESTIMATION OF BIOTA EXPOSURE IN RECEIVING WATERS. Presented at International Conference on Analysis of Emerging Contaminants in the Environment, York, UK, March 07 - 09, 2007.
Grange, A H., L I. Osemwengie, F. A. Genicola, AND G W. Sovocool. ION COMPOSITION ELUCIDATION (ICE): A HIGH RESOLUTION MASS SPECTROMETRIC TOOL FOR IDENTIFYING ORGANIC COMPOUNDS IN COMPLEX EXTRACTS OF ENVIRONMENTAL SAMPLES. Presented at American Chemical Society, 222st National Meeting, Chicago, IL, August 26-30, 2001.
OSEMWENGIE, L. I. FATE OF SYNTHETIC MUSK COMPOUNDS IN AN AQUATIC ENVIRONMENT. Presented at SETAC North American 27th Annual Meeting, Montreal, QC, CANADA, November 05 - 09, 2006.
OSEMWENGIE, L. I. MONITORING SYNTHETIC MUSK COMPOUNDS IN MUNICIPAL WASTEWATER AND ESTIMATING BIOTA EXPOSURE IN THE RECEIVING WATERS. Presented at 5th National Monitoring Conference, San Jose, CA, May 07 - 11, 2006.
LAZORCHAK, J. M., C. G. DAUGHTON, G. T. ANKLEY, J. E. TIETGE, EARL E. GRAY, V. S. WILSON, R. W. FLICK, A. D. BIALES, D. L. LATTIER, D. C. BENCIC, M. KOSTICH, M. MILLS, T. L. JONES-LEPP, L. I. OSEMWENGIE, K. M. SCHENCK, AND S. GLASSMEYER. U.S. EPA'S RESEARCH ON THE ECOLOGICAL EXPOSURE, EFFECTS AND RISK MANAGEMENT OF ENDOCRINE DISRUPTION CHEMICALS AND PHARMACEUTICALS. Presented at South Platte Forum, Longmont, CO, October 27, 2005.
Osemwengie, L I. AND S. L. Gerstenberger. LEVELS OF SYNTHETIC MUSKS COMPOUNDS IN MUNICIPAL WASTEWATER FOR ESTIMATING BIOTA EXPOSURE IN RECEIVING WATERS. JOURNAL OF ENVIRONMENTAL MONITORING 6(6):533-539, (2004).
Grange, A H., L I. Osemwengie, AND G W. Sovocool. IDENTIFYING COMPOUNDS DESPITE CHROMATOGRAPHY LIMITATIONS: ORGANOPHOSPHATES IN TREATED SEWAGE. LIQUID CHROMATOGRAPHY/GAS CHROMATOGRAPHY 21(11):1062-1076, (2003).
Osemwengie, L I. AND S. Steinberg. CLOSED-LOOP STRIPPING ANALYSIS (CLSA) OF SYNTHETIC MUSK COMPOUNDS FROM FISH TISSUES WITH MEASUREMENT BY OC/MS/SIM. JOURNAL OF CHROMATOGRAPHY A 993(1-2):1-15, (2003).
Osemwengie, L I. AND S. Steinberg. ON-SITE SOLID-PHASE EXTRACTION AND LABORATORY ANALYSIS OF ULTRA-TRACE SYNTHETIC MUSKS IN MUNICIPAL SEWAGE EFFLUENT USING GAS CHROMATOGRAPHY-MASS SPECTROMETRY IN THE FULL-SCAN MODE. JOURNAL OF CHROMATOGRAPHY 932(1-2):107-118, (2001).
Osemwengie, L I. LEVELS OF SYNTHETIC MUSKS COMPOUNDS IN AQUATIC ENVIRONMENT. Presented at University of Nevada - Reno Conference, Reno, NV, August 10, 2004.
Osemwengie, L I. AND S. L. Gerstenberger. LEVELS OF SYNTHETIC MUSKS COMPOUNDS IN MUNICIPAL WASTEWATER FOR ESTIMATING BIOTA EXPOSURE IN RECEIVING WATERS. Presented at American Chemical Society 228 Annual Meeting, Philadelphia, PA, August 26, 2004.
Osemwengie, L I. SYNTHETIC FRAGRANCES IN THE ENVIRONMENT: OVERVIEW OF THE CHEMISTRY, MONITORING, AND SIGNIFICANCE. Presented at California/Nevada Section of American Water Works Association Spring Conference, Las Vegas, NV, April 16, 2004.
JonesLepp, T, D. A. Alvarez, J. D. Petty, L I. Osemwengie, AND C G. Daughton. ANALYTICAL CHEMISTRY RESEARCH NEEDS FOR MAPPING TRENDS OF PHARMACEUTICAL AND PERSONAL CARE PRODUCT POLLUTION FROM PERSONAL USE. Presented at 10th Symposium on Handling of Environmental and Biological Samples in Chromatography, Wiesbaden, Germany, April 1-4, 2001.
Osemwengie, L I. ON-SITE SOLID PHRASE EXTRACTION AND LABORATORY ANALYSIS OF ULTRA-TRACE SYNTHETIC MUSKS IN MUNICIPAL SEWAGE EFFLUENT USING GAS CHROMATOGRAPHY-MASS SPECTROMETRY, FULL-SCAN MODE. Presented at International Ion Chromatography Symposium, Baltimore, MD, September 29-October 2, 2002.
Osemwengie, L I. AND S. Steinberg. CLOSED-LOOP STRIPPING ANALYSIS (CLSA) OF SYNTHETIC MUSK COMPOUNDS FROM FISH TISSUES WITH MEASUREMENT BY GAS CHROMATOGRAPHY-MASS SPECTROMETRY WITH SELECTED-ION MONITORING. Presented at American Chemical Society Conference, New York, NY, September 7-12, 2003.
Osemwengie, L I. AND S. Steinberg. IN SITU SOLID-PHASE EXTRACTION AND ANALYSIS OF ULTRA-TRACE SYNTHETIC MUSKS IN MUNICIPAL SEWAGE EFFLUENT USING GAS CHROMATOGRAPHY-MASS SPECTROMETRY, FULL-SCAN MODE. Presented at 2nd NGWA International Conference, Minneapolis, MN, October 8-11, 2001.