You are here:
Refine Your Search
Search Again
Search Within
Records 1 to
68
of 68
2018
Jones-Lepp, T., V. Taguchi, W. Sovocool, Don Betowski, P. DeArmond, B. Schumacher, W. Winnik, R. McMillin, AND C. Armstrong. Novel contaminants identified in fish kills in the Red River watershed, 2011–2013. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 37(2):336-344, (2017).
2017
Betowski, Don. Predicted phototoxicities of carbon nano-material by quantum mechanical calculations. Journal of Molecular Graphics and Modelling. Elsevier B.V., Amsterdam, Netherlands, 75:102-105, (2017).
Betowski, Don AND D. Aue. The Application of Computational Chemistry to Problems in Mass Spectrometry. Spectroscopy. UBM Life Sciences, Iselin, NJ, 15(2):24-28, (2017).
2015
Betowski, Don. Predicted phototoxicities of carbon nano-material by quantum mechanical calculations. Presented at SETAC, Salt Lake City, UT, November 01 - 05, 2015.
2014
Jones-Lepp, T., W. Sovocool, Don Betowski, P. DeArmond, V. Taguchi, AND C. Rosal. Oklahoma Fish Kill Study: Looking for a Toxic Needle in an Environmental Haystack. Presented at American Society of Mass Spectrometry, Baltimore, MD, June 14 - 19, 2014.
Jones-Lepp, T., Don Betowski, C. Rosal, W. Sovocool, P. DeArmond, AND V. Taguchi. Oklahoma Fish Kill Study: Looking for a Toxic Needle in an Environmental Haystack . Presented at 62nd ASMS Conference on Mass Spectrometry and Allied Topics, Baltimore, MD, June 15 - 19, 2014.
2012
BETOWSKI, L. D. MS-MS Approaches for the Analysis of Environmental Pollutants. Chapter 4, A. T. Lebedev (ed.), Comprehensive Environmental Mass Spectrometry. ILM Publications, SAINT ALBANS, HERTFORDSHIRE, Uk, 12:528-570, (2012).
2010
ROSAL, C. G., L. D. BETOWSKI, AND E. Siska. UV Filters and Toursim: Their Impact on the Environment. Presented at 2010 International Chemical Congress of Pacific Basin Societies, Honolulu, HI, December 15 - 20, 2010.
2009
BETOWSKI, L. D. Computational Chemistry Applied to Environmental Analytical Chemistry. Presented at Special International Journal of Mass Spectrometry Symposium, Santa Barbara, CA, June 18 - 20, 2009.
BETOWSKI, L. D., M. Enlow, AND D. H. Aue. Electron Affinities of Chlorinated Hydrocarbons and Their Electron Capture Structures. Presented at Lake Arrowhead Conference on Ion Chemistry and Mass Spectrometry, Lake Arrowhead, CA, January 16, 2009.
ROSAL, C. G., L. D. BETOWSKI, J. Romano, J. Neukom, D. Wesolowski, AND L. Zintek. THE DEVELOPMENT AND INTER-LABORATORY VERIFICATION OF LC-MS LIBRARIES FOR ORGANIC CHEMICALS OF ENVIRONMENTAL CONCERN. TALANTA. Elsevier Science Ltd, New York, NY, 79:810-817, (2009).
2008
ROSAL, C. G. AND L. D. BETOWSKI. Parabens and Sunscreens in the Environment: Determination by HPLC-ESI-MS/MS and GC-MS and Calculation of Phototoxicity. Presented at 56th American Society of Mass Spectrometry, Denver, CO, June 01 - 05, 2008.
ROSAL, C. G. AND L. D. BETOWSKI. Sunscreen Agents in the Environment: Determination by HPLC-ESI-MS/MS and GC-MS and Calculation of Phototoxicity. Presented at Western Regional Conference of the American Chemical Society, Las Vegas, NV, September 24, 2008.
2006
Betowski, L D., M. Enlow, L A. Riddick, AND D. H. Aue. CALCULATION OF ELECTRON AFFINITIES OF POLYCYCLIC AROMATIC HYDROCARBONS AND SOVATION ENERGIES OF THEIR ANIONS. JOURNAL OF PHYSICAL CHEMISTRY A. American Chemical Society, Washington, DC, 110(47):12927-12946, (2006).
BETOWSKI, L. D., M. ENLOW, AND D. H. AUE. ELECTRON AFFINITIES OF POLYNUCLEAR AROMATIC HYDROCARBONS AND NEGATIVE ION CHEMICAL IONIZATION SENSITIVITIES. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES. Elsevier Science Ltd, New York, NY, 255-256:123-129, (2006).
2003
Betowski, L D. AND M. Enlow. A HIGH-LEVEL CALCULATION OF THE PROTON AFFINITY OF DIBORANE. JOURNAL OF MOLECULAR STRUCTURE: THEOCHEM 638(1-3):189-195, (2003).
Betowski, L D., M. Enlow, L A. Riddick, T W. Collette, AND J. C. D'Angelo. THE MODELING OF THE FATE AND TRANSPORT OF ENVIRONMENTAL POLLUTANTS. Presented at Devils's Hole Workshop and Death Valley Regional Flow Model, Death Valley, CA, May 22, 2003.
2002
Betowski, L D., M. Enlow, AND L A. Riddick. THE PHOTOTOXOICITY OF POLYCYCLIC AROMATIC HYDROCARBONS: A THEORETICAL STUDY OF EXCITED STATES AND CORRELATION TO EXPERIMENT. COMPUTERS AND CHEMISTRY 26(4):371-377, (2002).
2001
Betowski, L D., M. Enlow, AND L A. Riddick. THE PHOTOTOXICITY OF POLYCYCLIC AROMATIC HYDROCARBONS. Presented at The ACS meeting, San Diego, CA, April 1-5, 2001.
2000
Aue, D. H., M. Guidoni, AND L D. Betowski. AB INITIO CALCULATED GAS-PHASE BASICITIES OF POLYNUCLEAR AROMATIC HYDROCARBONS. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES 201(1-3):283-295, (2000).
1998
Momplaisir, G M., L D. Betowski, AND E M. Heithmar. DETERMINATION OF NINE ORGANOSELENIUM COMPOUNDS USING HIGH PERFORMANCE LIQUID CHROMATOGRAPHY COUPLED WITH ELECTROSPRAY MASS SPECTROMETRY. Presented at 46th American Society for Mass Spectrometry Conference on Mass Spectrometry and Allied Topics, Orlando, FL, May 31-June 4, 1998.
Gurka, D F., L D. Betowski, T A. Hinners, AND E M. Heithmar. ENVIRONMENTAL APPLICATIONS OF HYPHENATED QUADRUPOLE TECHNIQUES. Analytical Chemistry 60(7):454A-467A, (1998).
1997
Pergantis, S. A., W. Winnik, AND L D. Betowski. DETERMINATION OF TEN ORGANOARSENIC COMPOUNDS USING MICRO HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY COUPLED WITH ELECTROSPRAY MS/MS. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 12:531-536, (1997).
Donnelly, J. R. AND L D. Betowski. PAH DETERMINATION IN ENVIRONMENTAL SAMPLES. R.A. Meyers (ed.), Encyclopedia of environmental analysis and remediation. John Wiley & Sons Incorporated, New York, NY, (1997).
1996
Winnik, W., W C. Brumley, AND L D. Betowski. NEGATIVE-ION FAB MASS SPECTROMETRY OF SULFONYLUREA HERBICIDES. European Mass Spectrometry 2:43, (1996).
1995
Fenci, J., G. Glish, R. D. Voyksner, AND L D. Betowski. ELECTROSPRAY IONIZATION AND TANDEM MASS SPECTROMETRY OF DYES. Presented at ASMS Meeting, Atlanta, GA, May 21, 1995.
Pace, C. M. AND L D. Betowski. MEASUREMENT OF HIGH-MOLECULAR-WEIGHT POLYCYCLIC AROMATIC HYDROCARBONS IN SOILS BY PARTICLE BEAM HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 6:597-607, (1995).
Winnik, W., W C. Brumley, AND L D. Betowski. NEGATIVE ION MASS SPECTROMETRY OF SULFONYLUREA HERBICIDES. Journal of Mass Spectrometry 30:1574-1580, (1995).
Winnik, W. AND L D. Betowski. NEGATIVE-ION FAST ATOM BOMBARDMENT AND DESORPTION CHEMICAL IONIZATION MASS SPECTROMETRY OF SULFONYL UREA HERBICIDES; COLLISIONALLY ACTIVATED DECOMPOSITION SPECTRA OF (M-H)- IONS. Presented at ASMS Meeting, Atlanta, GA, May 21, 1995.
Winnik, W., L D. Betowski, AND W C. Brumley. NI FAAB AND DCI-MS OF SULFONYLUREA HERBICIDES; CAD SPECTRA OF (M-H) IONS. Presented at 43rd ASMS Conference on mass spectrometry and allied topics, Atlanta, Ga, May 21-26, 1995.
Voyksner, R. D. AND L D. Betowski. OXIDATION OF AZO DYES: GAS PHASE REACTIONS IN AN ION TRAP MS. Presented at 43rd ASMS Conference on Mass Spectrometry and Allied Topics, Atlanta, GA, May 21 - 26, 1995.
Voyksner, R. D. AND L D. Betowski. OXIDATION OF AZO DYES: GAS-PHASE REACTION IN AN ION TRAP MASS SPECTROMETER. Presented at ASMS Meeting, Atlanta, GA, May 21, 1995.
1994
Voyksner, R. D., L D. Betowski, AND H. Y. Lin. STRUCTURAL INFORMATION GENERATED BY VARIOUS CID TECHNIQUES FOR THE IDENTIFICATION OF DYES. Presented at 42nd annual american society for mass spectrometry conference on mass spectrometry and allied topics, Chicago, IL, 05/29-06/03, 1994.
Betowski, L D. THE USE OF LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY FOR ENVIRONMENTAL ANALYSIS AT THE U.S. ENVIRONMENTAL PROTECTION AGENCY. Presented at Rocky Mountain Conference on Analytical Chemistry, Denver, Co, August 2, 1994.
1993
Jones, T L. AND L D. Betowski. FORMATION OF DIALKL AND DIARYL-TIN BUFFER ADDUCT IONS UNDER ELECTROSPRAY-LC/MS POSITIVE IONIZATION CONDITIONS. Presented at 41st Annual American Society for Mass Spectrometry Conference on Mass Spectrometry and Allied Topics, San Francisco, CA, May 31 - June 4, 1993.
Betowski, L D., B. Lesnik, C. M. Pace, AND M. R. Roby. LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY OF HIGH-MOLECULAR-WEIGHT POLYCYCLIC AROMATIC HYDROCARBONS USING THE PARTICLE BEAM INTERFACE. Presented at 9th Waste Testing and Quality Assurance Symposium, Arlington, VA, July12-16, 1993.
Betowski, L D. THE ENVIRONMENTAL APPLICATIONS OF LC/MS ON TRIARYLMETHANE DYES AND HIGH-MOLECULAR-WEIGHT PAHS. Presented at 10th Montreux LC/MS Symposium, Ithaca, N.Y, July 23, 1993.
1991
Betowski, L D., C. M. Pace, AND M. R. Roby. CHARACTERIZATION AND ANALYSIS OF THE BASE/NEUTRAL FRACTION FROM AZO DYE WASTE SAMPLES. U.S. Environmental Protection Agency, Washington, DC, EPA/600/X-91/147.
Jones, T L., L D. Betowski, B. Lesnik, T. Chaing, AND J. Teborg. INTERLABORATORY COMPARISON OF THERMOSPRAY AND PARTICLE BEAM LIQUID-CHROMATOGRAPHY/MASS SPECTROMETRY INTERFACES: EVALUATION OF A CHLORINATED PHENOXY ACID HERBICIDE LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY ANALYSIS METHOD. ENVIRONMENTAL SCIENCE & TECHNOLOGY 25(11):1880-1884, (1991).
1990
Jones, T L., L D. Betowski, AND T. C. Chiang. INTERLABORATORY COMPARISON OF A LC/MS METHOD FOR DETECTION OF CHLORINATED HERBICIDES. Presented at 38th Annual American Society of Mass Spectrometry Conference on Mass Spectrometry and Allied Topics, Tucson, AZ, June 3-8, 1990.
Betowski, L D., C. M. Pace, D. A. Miller, AND M. R. Roby. PERFORMANCE EVALUATION OF PARTICLE BEAM LIQUID CHROMATOGRAPHY MASS SPECTROMETRY MEASUREMENT ACID HERBICIDES. U.S. Environmental Protection Agency, Washington, DC, EPA/600/4-90/022.
Voyksner, R. D., J. T. Keever, H. S. Freeman, W. N. Hsu, AND L D. Betowski. REDUCTION OF AZO DYES TO AROMATIC AMINES FOR ENVIRONMENTAL MONITORING: EVALUATION OF REDUCTION PROCESSES. Presented at 38th Annual American Society of Mass Spectrometry Conference on Mass Spectrometry and Allied Topics, Tucson, AZ, June 3-8, 1990.
Betowski, L D. AND T L. Jones. THERMOSPRAY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY METHODS DEVELOPMENT. Presented at Sixth Annual Waste Testing and Quality Assurance Symposium, Washington, D.C, July 19, 1990.
1989
Yinon, J., T L. Jones, AND L D. Betowski. ENHANCED SENSITIVITY IN LIQUID CHROMATOGRAPHY THERMOSPRAY MASS SPECTROMETRY OF DYES USING A WIRE REPELLER. RAPID COMMUNICATIONS IN MASS SPECTROMETRY 3(2):38-40, (1989).
Jones, T L., L D. Betowski, AND J. Yinon. HIGH SENSITIVITY THERMOSPRAY IONIZATION MASS SPECTROMETRY OF DYES. Biomedical and Environmental Mass Spectrometry 18:445 - 449, (1989).
Betowski, L D. MAXIMIZATION OF THE SENSITIVITY AND SPECIFICITY OF A LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY SYSTEM. Presented at 6th Montreux LC/MS Symposium, Ithaca, New York, July 20, 1989.
Yinon, J., T L. Jones, AND L D. Betowski. PARTICLE BEAM LIQUID CHROMATOGRAPHY ELECTRON IMPACT MASS SPECTROMETRY OF DYES. JOURNAL OF CHROMATOGRAPHY 482:75-85, (1989).
Betowski, L D. THE USE OF LC/MS IN THE DETERMINATION OF BIOACTIVE COMPOUNDS. Presented at Californai Association of Toxicologists, Las Vegas, NV, February 11, 1989.
Betowski, L D., T L. Jones, AND J. Yinon. USE OF HIOGH PERFORMANCE LIQUID CHROMATOGRAPHY MASS SPECTROMETRY FOR THE CHARACTERIZATION OF DYES. 2:1-12, (1989).
1988
Gurka, D F., L D. Betowski, T. J. Jones, S M. Pyle, R. Titus, J. M. Ballard, Y. Tondeur, AND W. Niederhut. ENVIRONMENTAL SIMIVOLATILES AND NONVOLATILES ANALYSIS BY HYPHENATED SPECTRAL TECHNIQUES. Journal of Chromatographic Science 26:301-309, (1988).
Betowski, L D. AND T L. Jones. HPLC/MS AND HPLC/MS/MS ANALYSIS OF WASTE SAMPLES FOR ORGANOPHOSPHORUS PESTICIDES. Presented at 36th Annual American Society for Mass Spectrometry Conference on Mass Spectrometry and Allied Topics, San Francisco, CA, June 7, 1988.
Betowski, L D. AND T L. Jones. THE ANALYSIS OF ORGANOPHOSPHORUS PESTICIDE SAMPLES BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY AND HIGH PERFORMANCE LIQUID CHROMATOGRAPHY/TANDEM MASS SPECTROMETRY. Presented at 9th Rocky Mountain Regional American Chemical Society, Las Vegas, NV, March 28, 1988.
1987
Betowski, L D., W. Korfmacher, J. Lay, D. Potter, AND J. Hinson. DIRECT ANALYSIS OF RAT BILE FOR ACETAMINOPHEN AND TWO OF ITS CONJUGATED METABOLITES VIA THEMOSPRAY LIQUID CHROMATOGRAPH/MASS SPECTROMETRY. Biomedical and Environmental Mass Spectrometry 14:705-709, (1987).
Betowski, L D., D. A. Flory, M. McLean, AND M. Vestal. ENVIRONMENTAL APPLICATIONS OF THERMOSPRAY LC/MS QUALITATIVE ANALYSIS OF SULFONATED AZO DYES. RAPID COMMUNICATIONS IN MASS SPECTROMETRY 1(3):48-50, (1987).
Betowski, L D., R. K. Mitchum, AND C. L. Holder. IDENTIFICATION OF 2 GLUCURONIDE METABOLITES OF DOXYLAMINE VIA THERMOSPRAY/MASS SPECTROMETRY AND THERMOSPRAY/MASS SPECTROMETRY. JOURNAL OF ANALYTICAL TOXICOLOGY 11:182, (1987).
Betowski, L D. THE APPLICATION OF THERMOSPRAY IONIZATION TO TRIPLE QUADDRUPOLE MASS SPECTROMETRY FOR DYE ANALYSIS. Presented at CETAC Workshop on the Environmental Chemistry of Dyes, Pensacola, FL, November 12, 1987.
Betowski, L D. THE APPLICATION OF THERMOSPRAY IONIZATION TO TRIPLE QUADRUPOLE MASS SPECTROMETRY FOR ENVIRONMENTAL ANALYSIS. Presented at Bay Area Mass Spectrometry Group, San Francisco, CA, February 17, 1987.
Betowski, L D. THE MONITORING OF AN IMMUNOASSAY FOR PARAQUAT WITH LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY. Presented at Biomedical applications of mass spectrometry symposium at the American Chemical Society Southwest Regional Meeting, Little Rock, AR, December 3, 1987.
Betowski, L D. AND W. Korfmacher. THE UTILILTY OF THERMOSPRAY LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY FOR THE DIRECT ANALYSIS OF RAT BILE FOR ACETAMINOPHEN AND TWO OF ITS CONJUGATES. Presented at 35th Annual American Society for Mass Spectrometry Conference on Mass Spectrometry and Allied Topics, Denver, CO, May 25, 1987.
Betowski, L D., S M. Pyle, J. M. Ballard, AND G M. Shaul. THERMOSPRAY LC/MS/MS ANALYSIS OF WASTEWATER FOR DISPERSE AZO DYES. Biomedical and Environmental Mass Spectrometry 14:343-354, (1987).
1986
Betowski, L D. AND J. M. Ballard. THERMOSPRAY IONIZATION AND TANDEM MASS SPECTROMETRY OF DYES. ORGANIC MASS SPECTROMETRY 21:575-588, (1986).
Betowski, L D., G Shaul*, AND S M. Pyle. THERMOSPRAY LC/MS/MS ANALYSIS FOR AZO DYES SPIKED IN WASTEWATER. Presented at 34th annual American Society for Mass Spectrometry Conference on Mass Spectrometry and Allied Topics, Cincinnati, Oh, June 8, 1986.
1985
Betowski, L D. AND J. M. Ballard. THERMOSPRAY IONIZATION AND MASS SPECTROMETRY/MASS SPECTROMETRY OF DYES. Presented at 33rd Annual American Society for Mass Spectrometry Conference, San Diego, CA, May 31, 1985.
Betowski, L D., R. K. Mitchum, W. Korfmacher, AND F. A. Beland. THERMOSPRAY MASS SPECTROMETRY & THERMOSPRAY MS/MS/ OF 2 DEOXYGUANOSINE CARCINOGEN ADDUCTS. SPECTROS INTERNATIONAL JOURNAL 4:317-320, (1985).
1983
Betowski, L D., H. M. Webb, AND A. D. Sauter. PULSED POSITIVE ION NEGATIVE ION CHEMICAL IONIZATION MASS SPECTROMETRIC APPLICATIONS TO ENVIRONMENTAL AND HAZARDOUS WASTE ANALYSIS. Biomedical Mass Spectrometry 10(6):369-376, (1983).
1982
Gurka, D F. AND L D. Betowski. GAS CHROMATOGRAPHIC/FOURIER TRANSFORM INFRARED SPECTROMETRIC IDENTIFICATIONS OF HAZARDOUS WASTE EXTRACT COMPONENTS. Analytical Chemistry 54:1819, (1982).
1981
Sauter, A. D., L D. Betowski, T. R. Smith, T. R. Strickler, R. G. Beimer, B. N. Colby, AND J. E. Wilkson. FUSED SILICA CAPILLARY COLUMN GC/MS FOR THE ANALYSIS OF PRIORITY POLLUTANTS. Journal of High Resolution Chromatography 4:366, (1981).
Betowski, L D., H. M. Webb, AND A. D. Sauter. PULSED POSITIVE-ION NEGATIVE-ION CHEMICAL IONIZATION MASS SPECTROMETRIC APPLICATIONS TO ENVIRONMENTAL AND HAZARDOUS-WASTE ANALYSIS. Presented at 29th Annual American Society for Mass Spectrometry Conference on Mass Spectrometry and Allied Topics, Minneapolis, MN, May 28, 1981.