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Records 26 to
50
of 78 records from Author Leon Betowski
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
Betowski, L., D. Kendall, C. M. Pace, AND J. R. Donnelly. CHARACTERIZATION OF GROUNDWATER SAMPLES FROM SUPERFUND SITES BY AS CHROMATOGRAPHY/MASS SPECTROMETRY AND LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY. Environmental Science and Technology 30(12):3558-3564, (1996).
Thomas, D. H., V. Lopez-Avila, L. Betowski, AND J. Van Emon. DETERMINATION OF CARBENDAZIM IN WATER BY HIGH-PERFORMANCE IMMUNOAFFINITY CHROMATOGRAPHY ON-LINE WITH HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY WITH DIODE-ARRAY OR MASS SPECTROMETRIC DETECTION. Journal of Chromatography A 724(1-2):207-217, (1996).
Betowski, L. AND T. Jones-Lepp. LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY OF ORGANOTIN COMPOUNDS. Elsevier Science BV, Amsterdam, Netherlands, (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. Betowski. MEASUREMENT OF HIGH-MOLECULAR-WEIGHT POLYCYCLIC AROMATIC HYDROCARBONS IN SOILS BY PARTICLE BEAM HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY. Journal of American Society for Mass Spectrometry 6(7):592-607, (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., W. Brumley, AND L. Betowski. NEGATIVE-ION MASS SPECTROMETRY OF SULFONYLUREA HERBICIDES. Journal of Mass Spectrometry 30(11):1574-1580, (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.
Jones-Lepp, T., L. Betowski, AND V. Lopez-Avila. VALIDATION OF LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY METHODS: INTERLABORATORY STUDIES. Trends in Analytical Chemistry 13(8):333-338, (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
Gardner, D. A., T. J. Holdsworth, G M. Shaul*, K. A. Dostal*, AND L D. Betowski*. AEROBIC AND ANAEROBIC TREATMENT OF C.I. DISPERSE BLUE 79 - VOLUME I. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-89/051a (NTIS PB90-111642), 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.