Howard Weinberg

Research:
Publications
Research Group
Active Research
Completed Research
On the Web
Available Positions

Courses:
ENVR 400
ENVR 411
ENVR 691-096
ENVR 724
ENVR 726

Of Interest:
For Prospective Students
Instruments

Environmental Sci and Eng
UNC Chapel Hill

Publications

Peer-Reviewed Journal Papers

K. Doederer, M.J. Farré, M. Pidou, H.S. Weinberg, W. Gernjak. 2014. "Rejection of disinfection by-products by RO and NF membranes: Influence of solute properties and operational parameters" Journal of Membrane Science 467: 195-205. DOI: 10.1016/j.memsci.2014.05.029.

B.A Lyon , R.Y. Milsk , A.B. DeAngelo , J.E. Simmons , M.P. Moyer, & H.S. Weinberg. 2014. "Integrated Chemical and Toxicological Investigation of UV-Chlorine/Chloramine Drinking Water Treatment" Environmental Science & Technology. Just Accepted Manuscript DOI: 10.1021/es501412n.

B.A. Lyon, R.M. Cory, & H.S. Weinberg. 2014 “Changes in Dissolved Organic Matter Fluorescence and Disinfection Byproduct Formation from UV and Subsequent Chlorination/Chloramination.” J. Hazardous Materials 264:411-419.

K. Doederer, W. Gernjak, H.S.Weinberg, & M.J. Farré. 2014 “Factors Affecting the Formation of Disinfection By-Products During Chlorination and Chloramination of Secondary Effluent for the Production of High Quality Recycled Water.” Water Res. 48(1):218-229.

B.A. Lyon, A.D. Dotson, K.G. Linden, and H.S. Weinberg. 2012. "The Effect of Inorganic Precursors on Disinfection Byproduct Formation During UV-Chlorine/Chloramine Drinking Water Treatment." Water Res. 46(15):4653-4656.

M.J. Farré, K. Doederer, W. Gernjak, Y. Poussade, H. Weinberg. 2012. "Disinfection By-Products Management in High Quality Recyled Water." Wat Sci. Technol. 12(5):573-579.

X. Yang, R.C. Flowers, H.S. Weinberg, and P.C. Singer. 2011. "Occurrence and Removal of Pharmaceuticals and Personal Care Products (PPCPs) in an Advanced Wastewater Reclamation Plant." Water Res. 45(16): 5218-5228.

B.J. Horton, T.J. Luben, A.H. Herring, D.A. Savitz, P.C. Singer, H.S. Weinberg, and K.E. Hartmann. 2011. "The Effect of Water Disinfection By-products on Pregnancy Outcomes in Two Southeastern US Communities." J Occup Environ Med. 53(10): 1172-1178.

H. Weinberg, A. Galyean, and M. Leopold. 2011. "Evaluating Engineered Nanoparticles in Waters." TrAC Trends in Analytical Chemistry 30(1):72-83.

J.G. Pressman, S.D. Richardson, T.F. Speth, R.J. Miltner, M.G. Narotsky, E.S. Hunter, G.E. Rice, L.K. Teuschler, A. McDonald, S.Parvez, S.W. Krasner, H.S. Weinberg, A.B. McKague, C.J. Parrett, N. Bodin, R. Chinn, C.-F. T. Lee and J.E. Simmons. 2010. "Concentration, Chlorination, and Chemical Analysis of Drinking Water for Disinfection Byproduct Mixtures Health Effects Research: U.S. EPA’s Four Lab Study." Environ. Sci. Technol., 44(19): 7184–7192.

B.D. Stanford, A. Amoozegar, and H.S. Weinberg. 2010. "The impact of co-contaminants and septic system effluent quality on the transport of estrogens and nonylphenols through soil." Water Res. 44: 1598-1606.

B.D. Stanford and H.S. Weinberg. 2010. " Evaluation of On-Site Wastewater Treatment Technology to Remove Estrogens, Nonylphenols, and Estrogenic Activity from Wastewater." Environ. Sci. Technol. 44(8):2994–3001. doi: 10.1021/es903422b

S. Rodriguez Mozaz and H.S. Weinberg. 2010. "Pharmaceuticals in Water – An Interdisciplinary Approach to a Public Health Challenge." Environ. Health Perspect. 18(7):1016-1010

H.S. Weinberg. 2009. "Modern approaches to the analysis of disinfection by-products in drinking water." Phil. Trans. R. Soc. A. 367:4097–4118.

R.J. Miltner, T.F. Speth, S.D. Richardson, S.W. Krasner, H.S. Weinberg*, and J.E. Simmons. 2008. "Integrated Disinfection By-Products Mixtures Research: Disinfection of Drinking Waters by Chlorination and Ozonation/Postchlorination Treatment Scenarios." J. Toxicol. and Env. Health. 71(A):1133-1148.

S.D. Richardson, A.D. Thruston Jr., S.W. Krasner, H.S. Weinberg*, R.J. Miltner, K.M. Schenck, M.G. Narotsky, A.B. McKague, and J.E. Simmons. 2008. "Integrated Disinfection By-Products Mixtures Research: Comprehensive Characterization of Water Concentrates Prepared from Chlorinated and Ozonated/Postchlorinated Drinking Water" J. Toxicol. and Env. Health. 71(A): 1165-1186

C.S. Hoffman, P. Mendola, David A. Savitz, Amy H. Herring, D. Loomis, K.E. Hartmann, P.C. Singer, H.S. Weinberg*, and A. Olshan. 2008. "Drinking water disinfection by-product exposure and duration of gestation." Epidemiology, 19(5):738-746.

C.S. Hoffman, P. Mendola, David A. Savitz, Amy H. Herring, D. Loomis, K.E. Hartmann, P.C. Singer, H.S. Weinberg*, and A. Olshan. 2008. "Drinking water disinfection by-product exposure and fetal growth." Epidemiology, 19(5):729-737.

G.D. Onstad, H.S. Weinberg, and S.W. Krasner. 2008. "Occurrence of Halogenated Furanones in U.S. Drinking Waters." Environ. Sci. Technol., 42(9):3341–3348.

B.D. Stanford and H.S. Weinberg*. 2007. "Isotope Dilution for Quantitation of Steroid Estrogens and Nonylphenols by Gas Chromatography with Tandem Mass Spectrometry in Septic, Soil, and Groundwater Matrices." Journal of Chromatography 1176A:26-36.

V.J. Pereira, K.G. Linden, and  H.S. Weinberg*. 2007. "Evaluation Of UV Irradiation for Photolytic and Oxidative Degradation of Pharmaceutical Compounds in Water." Water Research 41:4413-4423.

T.J. Luben, A.F. Olshan, A.H. Herring, S. Jeffay, L. Strader, R.M Buus, R.L. Chan, D.A Savitz, P.C. Singer, H.S. Weinberg*, and S.D. Perreault. 2007. "The Healthy Men Study: An Evaluation of Exposure to Disinfection By-Products in Tap Water and Sperm Quality." Environmental Health Perspectives 115(8):1169-1176.

V.J. Pereira, H.S. Weinberg*, K.G. Linden, and P.C. Singer. 2007. "UV degradation kinetics and modeling of pharmaceutical compounds in laboratory grade and surface water via direct and indirect photolysis at 254 nm." Environ. Sci. and Technol., 41(5):1682-1688.

Z. Ye, H.S. Weinberg, M.T. Meyer 2007. "Trace Analysis of Trimethoprim and Sulfonamide, Macrolide, Quinolone, and Tetracycline Antibiotics in Chlorinated Drinking Water Using Liquid Chromatography Electrospray Tandem Mass Spectrometry." Anal. Chem., 79(3): 1135-1144.

D.A. Savitz, P.C. Singer, A.H. Herring, K.E. Hartmann, H.S. Weinberg*, and C. Makarushka. 2006. "Exposure to Drinking Water Disinfection By-Products and Pregnancy Loss". Am. J. of Epidemiology, 164(11):1043-1051.

S.W. Krasner, H.S. Weinberg, S.D. Richardson, S.J. Pastor, R. Chinn, M.J. Sclimenti, G.D. Onstad, and A.D. Thruston, Jr. 2006. "Occurrence of a New Generation of Disinfection Byproducts." Environ. Sci. Technol., 40(23): 7175 - 7185.

H.S. Weinberg. 2006. "Measuring quality - The development of methods to assess drinking water." JAWWA., 98(3):192-196.

S. Khan, H.S. Weinberg*, and E.C. Bedford. 2006. "Aqueous-Phase Aminolysis: Approach for the Analysis of Epoxides in Water." Anal. Chem., 78(8):2608-2616.

H.S. Weinberg*, V.P. Pereira, P.C. Singer, and D.A. Savitz. 2006. "Considerations for Improving the Accuracy of Exposure to Disinfection By-Products by Ingestion in Epidemiologic Studies." Science of the Total Environment, 354(1):35-42 (15 January 2006)

G.D. Onstad and H.S. Weinberg*. 2005. "Methodology for Assessment of Halogenated Furanones in a Nationwide Study of Drinking Waters." Analytica Chimica Acta., 534(2):281-292.

H. Weinberg*, S. Cook, and P.C. Singer. 2005. "Insights into False Positive Total Cyanide Measurements in Wastewater Plant Effluents". Water Environment Research, 77(5).

V.P. Pereira, H.S. Weinberg, and P.C. Singer. 2004. "Disinfection By-Product Variability in a Chloraminated Distribution System." JAWWA, 96(11):91-102.

H.S. Weinberg, V.P. Unnam, and C.D. Delcomyn. 2003. "Bromate In Chlorinated Drinking Waters: Occurrence and Implications for Future Regulation." Environ. Sci. and Technol., 37(14):3104-3110.

Howard S. Weinberg and Steven .J. Cook. 2002. "Segmented Flow Injection, UV Digestion, and Amperometric Detection for the Determination of Total Cyanide in Wastewater Treatment Plant Effluents." Anal. Chem., 74, 6055-6063.

P.C. Singer, H.S. Weinberg et al. 2002. "Relative Dominance of HAAs and THMs in Treated Drinking Water." AWWA Research Foundation, 2002. 298p.

H.S. Weinberg and P.C. Singer. 2002. "Assessment of Trace Element Concentrations in Municipal Wastewater Treatment Plant Discharges in North Carolina." Report 337. Water Resources Research Institute, Raleigh, NC. 124p.

A.M. Eyring, H.S. Weinberg, and P.C. Singer. 2002. "Measurement and Effect of Trace Element Contaminants in Alum." JAWWA, 94(5):135-146.

C.D. Delcomyn, H. Weinberg, and P.C. Singer. 2001. "Use of Ion Chromatography with Post-Column Reaction for the Measurement of Tribromide to Evaluate bromate Levels in Drinking Water." Journal of Chromatography A, 920(1-2): 213.

K.S. Brophy, H.S. Weinberg, and P.C. Singer. 2000. "Quantification of Nine Haloacetic Acids Using Gas Chromatography with Electron Capture Detection" In: Natural Organic Matter and Disinfection By-Products, ACS Symposium Series 761, ACS, Washington, DC.

"Identification of New and Uncharacterized Disinfection By-products in drinking Water." Co-editor. An ILSI Health and Environmental Sciences Institute Report. ILSI, Washington, 1999, 76p.

H. Weinberg. "Disinfection By-Products in Drinking Water - The Analytical Challenge." Anal. Chem., 71: 801A-808A, 1999.

M. Fielding, J. Hutchison, D.M. Hughes, W.H. Glaze, and H.S. Weinberg. 1999. "Analytical Methods for Polymers and Their Oxidation By-Products." JAWWA, Denver, CO., 1999.

H. Weinberg, H. Yamada, and R. Joyce. 1998. "A New, Sensitive, and Selective Method for Determining Sub-mg/L Levels of Bromate in Drinking Water." J. Chromatog., 804A:137-142.

H. Weinberg and H. Yamada. 1998. "Post Ion Chromatography Derivatization for the Analysis of Oxyhalides at Sub ppb Levels in Drinking Water". Anal. Chem., 70(1):1-6.

H. Weinberg and W.H. Glaze. 1997. "A Unified Approach to the Analysis of Polar Organic By-Products of Oxidation in Aqueous Matrices". Water Res., 31(7):1555-1572.

H. Weinberg. 1994. "Pre-Concentration Techniques for Bromate Analysis in Ozonated Waters". J. Chromatog. A, 671(1+2):141-149.

H. Weinberg, W.H. Glaze, S.W. Krasner, and M.J. Sclimenti. 1993. "Formation and Removal of Aldehydes in Plants that use Ozone". J. Amer. Water Works Assoc., 85(5):72-85.

S.W. Krasner, W.H. Glaze, H.S. Weinberg, P.A. Daniel, and I.N. Najm. 1993. "Formation and Control of  Bromate during Ozonation of Water Containing Bromide". J. Amer. Water Works Assoc., 85(1):73-81.

W.H. Glaze, H.S. Weinberg, and J.E. Cavanagh. 1993. "Evaluating the Formation of Brominated DBPs During Ozonation". J. Amer. Water Works Assoc., 85(1):96-103.

J.E. Cavanagh, H.S. Weinberg, A.Gold, R. Sangaiah, D. Marbury, and W.H.Glaze. 1992. "Ozonation By-Products: Identification of Bromohydrins from the    Ozonation of Natural Waters with Enhanced Bromide Levels." Environmental Science and Technology, 26(8):1658-1682.

H. Weinberg and N. Narkis. 1991. "Effect of Chlorine Dioxide on Anionic and Non-Ionic Surfactants Present in Wastewaters". Tenside Surf. Det., 28(4):282-286.

N. Narkis and H. Weinberg. 1989. "Removal of Non-Ionic and Anionic Surfactants from Effluents Intended for Reuse". Tenside Surf. Det., 26(6):400-405.

H. Weinberg and N. Narkis. 1987. "Physico-Chemical Treatments for the Complete Removal of Non-Ionic Surfactants from Effluent." Env. Polln., 45:245-260.

Books

D.R.U. Knappe, L-A. Dudley, Q. Deng, M. Hennessy, Y. Wang, H. Weinberg, P. Kaplan, & Y. Liu. 2012. “Treatment Options for the Removal of Emerging Pollutants of Concern”. Water Resources Research Institute of the University of North Carolina, Raleigh NC. 66p.

K.G. Linden,  A.D. Dotson, H.S. Weinberg, B. Lyon, W.A. Mitch, and A. Shah. 2012. "Impact of UV Location and Sequence on By-Product Formation". Water Research Foundation. 118p.

H.S. Weinberg, K. Kritsch, and S.W. Krasner. 2011. "Iodoacids in Drinking Water Supplies: Methods and Occurrence" Water Research Foundation.

D.A. Savitz, P.C. Singer, K.E. Hartmann, A.H. Herring, H.S. Weinberg* et al. 2005. "Drinking Water Disinfection Byproducts and Pregnancy Outcome." AWWA Research Foundation. 212p.

Weinberg, H.S., Krasner, S.W., Richardson, S.D., Thruston, A.D. The Occurrence of Disinfection By-Products (DBPs) of Health Concern in Drinking Water: Result of a Nationwide DBP Occurrence Study. 2002. U.S. Environmental Protection Agency, National Exposure Research Laboratory, EPA/600/R-02/068, 460p.

Identification and Occurrence of Ozonation By-Products in Drinking Water (with W.H. Glaze). AWWA, Denver, Co., 1993.

Chapters in Books

"Characterization of Engineered Nanoparticles in Natural Waters" In: Comprehensive Analytical Chemistry, Volume 59, 2012, Pages 169–195. Elsevier.

"Drinking Water Quality for the 21st Century - New Technologies for a New Era". In: Water Resources Quality, edited by H. Rubin et al. Springer-Verlag, Berlin, 2002.

"Overview of recent studies of ozonation disinfection by-products" (with W.H.Glaze). In: Disinfection By-products in Water Treatment, edited by G. Amy and R. Minnear. Lewis Publishers Inc., 1995.

"Activated carbon adsorption of non-ionic surfactants from aqueous solutions and effluents" (with N. Narkis and B. Ben David). In: Activated Carbon Technology,edited by R.W. Peters and C.P. Huang. Lewis Publishers Inc., 1990.

Conference Papers
* For a more up-to-date list, please contact Howard Weinberg.

2007

6th Annual American Water Works Association Eastern Regional Conference, Sea Trail Resort and Conference Center April 22-24:
(i) L.A. Richards and H.S. Weinberg. “Antibiotic Fate and Transport in Watersheds.”
(ii) A.C. Sykes and H.S. Weinberg. “Mixed Oxidants: An Alternative to Chlorine for Disinfection. What is in them?”
(iii) A. Parks and H.S. Weinberg. “Nonylphenol isomers and triclosan in biosolids: The potential for organic contaminants in biosolids to be used as chemical indicators of non-point source pollution.”
(iv) K. Weissbach and H.S. Weinberg. “Iodoacids in our drinking water: The Challenge to Identify Low-Level By-Products of Chronic Health Concern”.

233rd American Chemical Society National meeting, Chicago, IL, March 25-29:
(i) H.S. Weinberg, S.A. Eslinger, and P.C. Singer. “Impact of Point-of-Use Treatment on Disinfection Byproduct Levels in Ingested Drinking Water.”
(ii) N. Bodin, H.S. Weinberg, S.W. Krasner, S.D. Richardson, J. G. Pressman, T.F. Speth, R.J. Miltner, and J.E. Simmons. “Methodological Approach for Measuring Priority DBPs in Reverse Osmosis Concentrated Drinking Water”.

Water Resources Research Institute Annual Conference, Raleigh, NC., March 27-28:
A. Parks and H.S. Weinberg. “Nonylphenols and Triclosan as Potential Chemical Indicators of Non-Point Source Pollution in Surface Waters”.

2006

SETAC North America Conference, Montreal, Canada, November 5-9:
B.D. Stanford and H.S. Weinberg. “Competitive Sorption between Nonylphenols and Steroid Estrogens: Analytical Methods and Batch Study Results”.

Northeastern Regional Meeting (NERM) of the American Chemical Society, Binghamton, NY, October 5-7:
B.D. Stanford and H.S. Weinberg. “Nonylphenols and Steroid Estrogens in Septic and Soil-Water Systems: Analytical Methods and Batch Study Results”.

American Water Works Association Annual Conference and Exposition, San Antonio, TX, June 11-15:
P. Singer, D. Savitz, H. Weinberg and A. Herring. “Disinfection By-Product Exposure and Pregnancy Loss”.

NCSU Soils and On-Site Wastewater Training Academy On-site Wastewater Treatment Conference, Raleigh, NC., Oct 25-27:
(i) T. Chalew and H. Weinberg. “Developing Indicators of Contamination Originating from On-Site Wastewater Treatment”.
(ii) B. Stanford and H. Weinberg. “Hormones and Nonionic Surfactants in Septic and Soil Samples: Analytical Methods and System Evaluation”.

Water Resources Research Institute Annual Conference, Raleigh, NC., April 5:
(i) K. Stauffenberg and H. Weinberg. “Preparing the Framework for Evaluating Microbial Resistance in Surface Waters and Sediments”.
(ii) T. Chalew and H. Weinberg. “Developing Chemical Indicators of Surface Water Contamination Distinguishing On-site Wastewater Treatment and Municipal Wastewater Treatment Plant Sources”.

2005

American Water Works Association Water Quality Technology Conference, Quebec City,Canada, Nov 2-5:
V.J. Pereira, K.G. Linden, and H.S. Weinberg. "Photodegradation of Pharmaceutical and Contrast Media Agents in Surface Water by Direct Photolysis and UV Advanced Oxidation Processes"

3rd International Congress on Ultraviolet Technologies, Whistler, BC, Canada, May 24-27:
V.J. Pereira, K.G. Linden, K. G. and H.S. Weinberg. "Direct photolysis and UV advanced oxidation processes of pharmaceuticals in surface water."

2004

4th International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, MN, Oct 13-15:
(i) Z.Ye, H.S. Weinberg*, and M.T. Meyer. "Occurrence of Antibiotics in Drinking Water";
(ii) V.J. Pereira, K.G Linden, H.S. Weinberg*, "Photodegradation of Pharmaceutical and Contrast Media Agents in Surface Water by Direct Photolysis and UV Advanced Oxidation Processes."

2003

American Water Works Association Water Quality Technology Conference, Philadelphia, Nov 2-5:
"Occurrence of Antibiotics in Drinking Water Sources and their Transformation in Chlorine Disinfection";
"Stability and Persistence of Ozonation Byproducts in Chlorinated and Chloraminated Drinking Water";
"Relationship Between Halogenated Furanones, Haloacetic Acids, and Trihalomethanes in Chlorinated Natural Organic Matter";
"Approaches for the Identification of New Ozonation By-Products in Drinking Water";
"Temporal and Spatial Variability in Brominated Speciation of Disinfection Byproducts in Water Distribution Systems"; and
"Estimating Average Daily Exposure To Disinfection By-Products In Drinking Water By Examining Alternate Ingestion Pathways."

2002

"Approaches to Determining Whether Pharmaceutical Residues are Present in NC Drinking Waters". Water Resources Research Institute Annual Conference, Raleigh, NC. April.

2001

"Determination Of New Carbonyl-Containing Disinfection By-Products In Drinking Water"; "The Occurrence Of A New Generation Of DBPs (Beyond The ICR)"; "Improvements in Extraction of MX-analogues from Drinking Water"; "Analysis of Epoxides in Drinking Water Using In Situ Derivatization and Detection by ECD and CI-MS". Water Quality Technology Conference, Nashville, TN November.

"The Uptake of the Water Disinfection By-Product Bromate into Foods During Home Processing"; "Spatial and Temporal Variability of Disinfection By-Products in a Water Distribution System". Eleventh Annual Meeting ISEA, Charleston, SC November.

"Chemical and Toxicological Evaluation of Chlorinated and Ozonated-Chlorinated Drinking Water: a Collaboration of the Four National Labs of the U.S. EPA"; "Application of Electrospray/Atmospheric Sampling Glow Discharge Ionization for Direct Analysis of Polar Disinfection By-Products". 49th ASMS Conference on Mass Spectrometry and Allied Topics, Chicago, IL May.

"Application of a New Ionization Source for Direct Mass Spectrometric Analysis of Semi-volatiles". 115th North Carolina ACS Section Meeting, North Carolina State University, April. Dalton, C.N.; Ye, Z.; Weinberg, H.; Glish, G.L.

"Development of a Research Strategy for Integrated Disinfection By-Products Mixtures Research Toxicological and Chemical Evaluation of Alternative Disinfection Treatment Scenarios". Microbial/Disinfection By-Products Health Effects Symposium March.

"Integrated Technology-Based Toxicology Studies on Drinking Water Disinfection Byproducts (DBPs)". Application of Technology to Chemical Mixtures Research, Colorado State University, CO, January.

2000

"Methods for the Identification of New Disinfection By-products in Drinking Water". International Society for Exposure Analysis, 10th Annual Conference, Monterey, CA, October.

(Invited Plenary Speaker) "DBPs in Drinking Water; the Analytical Challenge for the Next Generation of DBPs Derived from NOM." International Ion Chromatography Symposium, Nice, France, September.

(Invited Seminar) "Effective Quality Control for Accurate Measurement of HAA9 Using Diazomethane Derivatization"AWWA Water Quality Technology Conference, Salt Lake City, Utah, November.

"Evolution and Application of an Analytical Method for Nine Halogenated Furanones in Drinking Water", " Measurement of sub-mg/L Levels of Bromate in Chlorinated Drinking Waters", "Determination of Newly Identified Disinfection By-Products in drinking Water".AWWA Water Quality Technology Conference, Salt Lake City, Utah, November.

(Poster) Investigation of Disinfection By-Products in Drinking Water Using Solid-Phase Extraction and Gas Chromatography/Mass Spectrometry; Solid Phase Microextraction for Trace Level Analysis of Disinfection By-Products. 48th ASMS Conference.

1999

"Control of Haloacetic Acid Concentrations by Biofiltration: A Case Study". AWWA Water Quality Technology Conference, Tampa, FL November.

"Quantification of Nine Haloacetic Acids Using Gas Chromatography with Electron Capture Detection". Current Research into the Occurrence of New Disinfection By-Products in Drinking Water. ACS Spring Meeting, Anaheim, Ca, April.

1998 

"Import of pH Adjustment and Chloramination for the Control of Haloacetic Acid Formation in North Carolina Drinking Water". AWWA Water Quality Technology Conference, San Diego, CA, November.

"Application of Flow Injection to the Analysis of Total Cyanide in Wastewater Treatment Plant Effluents". WEFTEC, Orlando, FL, October.

"Cyanide Analysis in Wastewater; Observations and Solutions".NC AWWA/WEF Annual Conference, Durham, NC . November.

"Trace Element Analysis in Wastewaters".WRRI Annual Conference, Raleigh, NC, April.

"Overview of Isolation and Concentration Procedures Currently Applied to Drinking Water Disinfection By-Products", International Life Sciences Institute Workshop, Washington, DC, February.

"Solid Phase Extraction Techniques". International Life Sciences Institute Workshop, Washington, DC, February.

1997

"Sub Part Per Billion Analysis of Bromate, Iodate, and Chlorite in drinking Water Using a New Post Ion Chromatography Column Reaction  and UV Detection". AWWA Water Quality Technology Conference, Denver, CO, November.

 "Formation of Bromate in a  Continuous Flow Ozonation Reactor". AWWA Water Quality Technology Conference, Denver, CO, November.

 "A New, Sensitive, and Selective Method for Determining Sub mg/L Levels of Bromate in Drinking Water". International Ion Chromatography Symposium, Santa Clara, CA, September

1996

"Ozonation By-Products in Drinking Water"AWWA Water Quality Technology Conference, Boston, MA., November

"Evaluation of Chlorine Dioxide as a Treatment Technique for Compliance with the Disinfectant and Disinfection By-Products Rule". NC AWWA/WEF Annual Conference, Pinehurst, NC, November.

"Analysis of Trace Metals in Complex Matrices" EPA/WEF 19th Annual Conference on Analysis of Pollutants in the Environment,  Norfolk, VA, May.

1995

"Formation and Control of Bromate in Continuous-Flow Ozonation Reactors"ACS Annual Meeting, Chicago, IL., August.

1994

"Formation and Methods for  Detection of Disinfection By-Products"APHA 122nd Annual Meeting, Washington, D.C., October.

1993

"On-Line Pre-Concentration Techniques for the Analysis of  Bromate in Ozonated Surface Waters" International Ion Chromatography Symposium,  Baltimore, MD., Sept.

"An Overview of Recent Studies of Ozonation  By-Products"ACS Symposium, Washington D.C., August.

"Bromate Occurrence  and Control: Pilot and Full-Scale Studies"  AWWA Annual Conference, San Antonio, TX., June.

"Parts-Per-Billion Level Determination of Bromate in Ozonated Drinking Water Using Ion Chromatography" PITTCON, Atlanta, Ga., March.

1992

"Control of Polar By-Product Formation in Ozonation Plants", and "Methodology for Plant Surveys; Analytical Pitfalls". AWWA Water Quality Technology Conference, Toronto, Canada, Nov.

1991

"Occurrence of Bromate from Ozonation and Control Strategies". International Ozone Association Conference, San Diego, March.

"Oxidation By- Products Resulting from the Interaction of Chlorine Dioxide with Non-Ionic Surfactants". Chemical Oxidation - Technology for theNineties, 2nd International Symposium, Nashville, TN., February.

"Formation and Removal in Filters of Aldehydes by the Ozonation of Drinking Waters". 14th International Symposium on Wastewater and 3rd Workshop on Drinking Water,  Montreal, Canada, November.

"Modification and Application of Hydrogen Peroxide Analysis in Ozonation Plant Surveys". AWWA Water Quality Technology Conference, Orlando, FL., November.

"Trends in Aldehyde Formation and Removal Through Plants Using Ozonation". AWWA Annual Conference, Water Quality Division, Philadelphia, PA., June.