last updated: August 7, 2001

Aga, Diana S

Dr. Diana S. Aga is an environmental analytical chemist and an associate professor in the Chemistry Department of the University of Nebraska at Kearney since 1998. Her current research focuses on the development and applications of immunochemical techniques for environmental analysis.

Dr. Aga finished her Ph.D. in Environmental and Analytical Chemistry in the University of Kansas, Lawrence, KS in 1995. She obtained her B.S. in Agricultural Chemistry in the University of the Philippines at Los Baños, Laguna, Philippines in 1988.

Dr. Aga's current research focuses on the development and applications of immunochemical techniques for environmental analysis.

Emphasis is placed on ELISA methods for pesticide analysis. Study on the occurrence of antibiotics in soil and water. Concentrations and persistence of antibiotic residues in the field where animal manure has been applied as fertilizer are being investigated.

Specific current research includes:

• investigating the occurrence of antibiotics in the environment using LCMS and ELISA;
• Monitoring of PCE groundwater contamination at an EPA Superfund site;
• Developing an ELISA for the analysis of the new herbicide Isoxaflutole; and
• Separating chiral

Other Recent Research/Extension Programs:

• Analyzed chiral herbicides and their metabolties by CZE and GC/MS and determined the liposome-water partition coefficients of pesticides by CZE at the Swiss Federal Institute for Environmental Sciences and Technology, Duebendorf, Switzerland.
• Optimized ELISA for pesticides using biotenstreptavidin signal amplification systems at the Technical University of Munich, Germany.
• Conducted a field study on the fate and transport of acetanilide and characterized pesticide metabolites by NMR and FAB/MS/MS at the U.S. Geological Survey in Lawrence, KS.

Publications

Book Edited

Immunochemical Technology for Environmental Applications
Aga, D.S. and Thurman, E.M. Editors
ACS Symposium Series 657. ACS Books: Washington DC, 1997

Encyclopedia and Book Chapters

Environmental Immunoassay, In Encyclopedia of Environmental Analysis and Remediation, R.A. Meyers (Ed.),
Aga, D.S.
John Wiley & Sons, Inc., NY, USA, p.2265-2291 (1998)

Environmental Immunoassays: Alternative Techniques for Soil and Water Analysis In: Immunochemical Technology for Environmental Applications (Aga, D.S. Thurman, E.M. Eds.)
Aga, D.S., Thurman, E.M.
ACS Symposium Series, American Chemical Society, Washington DC, 1997, vol. 646, 1-20 (1997)

Application of Solid-Phase Extraction for Low-level Analysis of Atrazine in Water and Soil by ELISA In: New Frontiers in Agro-chemical Immunoassay; D.A. Kurtz, J.H. Skeritt and L. Stanker (Eds.)
Aga, D.S. and Thurman, E.M.
AOAC International, VA, USA, p 123-136 (1995 )

Journal Articles

Simultaneous Quantification of Acetanilide Herbicides and their Oxanilic and Sulfonic Acid Metabolites in Natural Waters
Heberle, S, Aga, D.S., Muller, S.R.
Analytical Chemistry, 72(6), 1120-1125, 2000

Sulfonic and Oxanilic Acid Metabolites of Acetanilide Herbicides: Separation of Diastereomers and Enanti-omers by Capillary Zone Electrophoresis and Identification by 1H NMR Spectroscopy
Aga, D.S., Rentsch, D., Hany, R. and Muller, S.R.
Environmental Science and Technology, 33(19), 3462-3468, 1999

Evaluation of Microtiter-Plate Enzyme-Linked Immunosorbent Assay for the Analysis of Triazine and Chloroacetanilide Herbicides in Rainfall
Pomes, M.L., Thurman, E.M., Aga, D.S., and Goolsby, D.A.
Environmental Science & Technology, 32(1):163-168, 1998

Environmental Immunoassays: Practical applications and Recent Developments
Aga, D.S.
Analusis, 25(7), 25-29, 1997

Nuclear Magnetic Resonance Identification of New Sulfonic Acid metabolites, of Chloroacetanilide Herbicides
Morton, M.D., Walters, F.H., Aga, D.S., Thurman, E.M. and Larive, C.K.
Journal of Agricultural and Food Chemistry, 45(4) 1240-1243, 1997

Identification of a New Sulfonic-Acid Metabolite of Metolachlor in Soil
Aga, D.S., Thurman, E.M., Yockel, M.Y., Zimmerman, L.R. and Will-iams, T.D.
Environmental Science and Technology, 30(2) 592- 597, 1996

Occurrence of Alachlor and Its Sulfonated Metabolite in Rivers and Reservoirs of the Midwestern United States
Thurman, E.M. Goolsby, D.A., Aga, D.S., Pomes, M.L. and Meyer, M.T.
Environmental Science and Technology, 30(2) 569-574, 1996

Determination of Alachlor and Its Sulfonic Acid metabolite in Water by Solid-Phase Extraction and Enzyme-Linked Immunosorbent Assay
Aga, D.S., Thurman, E.M. and Pomes, M.L.
Analytical Chemistry, 66(9) 1495-1499, 1994

Coupling Solid-Phase Extraction and Enzyme-linked Immunosorbent Assay for Ultra-trace Determination of Herbicides in Pristine Water
Aga, D.S. and Thurman, E.M.
Analytical Chemistry, 65(20):2894-2898, 1993