Grantee Research Project Results
Final Report: Sulfate and Nitrate Dynamics in the Canacadea Watershed
EPA Grant Number: R828737C006Subproject: this is subproject number 006 , established and managed by the Center Director under grant R830420
(EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
Center: Center for Environmental and Energy Research (CEER)
Center Director: Earl, David A.
Title: Sulfate and Nitrate Dynamics in the Canacadea Watershed
Investigators: Hluchy, Michele M. , McGowan, Garrett J.
Institution: Alfred University
EPA Project Officer: Packard, Benjamin H
Project Period: September 1, 2000 through August 31, 2002
RFA: Targeted Research Center (2000) Recipients Lists
Research Category: Targeted Research
Objective:
Our primary objective in this project was to track nitrate and sulfate ions through a partially disturbed watershed and ultimately, to develop a geochemical map of the watershed, with inputs and outputs for all contributions. It is hoped that our work will provide the knowledge for others to understand the complex relationships between acid precipitation and its effects.
Summary/Accomplishments (Outputs/Outcomes):
We have continued to collect surface water and ground water (wells) from a range of locations throughout the Canacadea Watershed. With the aid of student researchers during the summer (Adam Gardner and Emily Coppedge) as well as the assistance of Josh Dunn, a number of soil moisture collectors (lysimeters) were put into place and sampling of these sources are now part of our normal operating protocol.
James M. Hart, who worked as our half-time technician from March 2001 until August 2001, wrote standard operating procedures for the collection, chain of custody, and analysis of our water samples using the ion chromatograph. For the ion chromatograph, we purchased an auto-sampler to aid in the rapid collection of many data points as well as ease the burden of making replicate analyses of our samples. A chain of custody card for each sample was employed to ensure correct lineage and analysis. James Hart left the project during August 2001, and we then hired Jeanne Wilson as our technician. She ensured the proper process of sampling, handling, and analysis. During October 2001, she began to use the flame atomic absorption (AA) device to quantify the base metal cations: sodium, potassium, magnesium, and calcium. Also during the fall 2001, we hired Liane Klingensmith to assist Adam and Emily with the project.
A capillary electrophoresis device was purchased and placed on site during April 2001. This instrument will be used as an analytical assurance/control tool once standard methods for the analysis of cations and anions are found for use with this instrument.
An inductively coupled plasma, available for use from the New York State College of Ceramics located at Alfred University, also was used for quality assurance for the quantification of base metal cations to compare to the data acquired using the flame AA device.
Replicate analysis of samples from each location were run on the ion chromatograph with relative standard deviations at less than 3 percent and correlation coefficients on calibration curves of certified standards of 0.9900 or better.
Tracking the fate of nitrates and sulfates in the watershed has shown what preliminary results showed of the last few years; the precipitation that falls has concentrations on the order of 4-5 ppm nitrate and 4-5 ppm sulfate. As the water progresses through the watershed from incident precipitation to a shallow well, the nitrate concentrations become decreased and the sulfate concentrations increase. The samples collected from the shallow well are 2 ppm nitrate and 13 ppm sulfate. Finally, when the water has reached the deep well, the trends in nitrate and sulfate concentrations continue, with nitrate concentrations less than2 ppm and sulfate concentrations greater than 30 ppm. We believe that the water is releasing a sulfate-containing mineral, and there is a geologic (or biologic) feature present in the subsurface that is complexing the nitrate, thus preventing it from freely traveling to the deep well with the passing water.
The mineral makeup of the watershed needs to be completed. This will be done by X-ray powder diffractometry, also available at the New York State College of Ceramics, on core samples that were collected, labeled, and stored when the wells were dug. Analysis of the base metal cation concentration trends will be made as more data are collected. Also, other possible sources of nitrate and sulfate must be identified (such sources may include agricultural runoff) through fall in vegetation and urban contributions.
Supplemental Keywords:
nitrate ions, sulfate ions, geochemical mapping, Canacadea watershed, lysimeter, ion chromatography, flame atomic absorption, capillary electrophoresis, inductively coupled plasma spectrometer, x-ray powder diffractometry,, RFA, Scientific Discipline, Water, Water & Watershed, Environmental Chemistry, Environmental Monitoring, Ecology and Ecosystems, Watersheds, atmospheric processes, acid precipitation, geochemical map, aquatic ecosystems, ecological indicators, ecosystem stress, watershed assessmentRelevant Websites:
Progress and Final Reports:
Original AbstractMain Center Abstract and Reports:
R830420 Center for Environmental and Energy Research (CEER) Subprojects under this Center: (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
R828737C001 Environmental Impact of Fuel Cell Power Generation Systems
R828737C002 Regional Economic and Material Flows
R828737C003 Visualizing Growth and Sustainability of Water Resources
R828737C004 Vibratory Residual Stress Relief and Modifications in Metals to Conserve Resources and Prevent Pollution
R828737C005 Detecting and Quantifying the Evolution of Hazardous Air Pollutants Produced During High Temperature Manufacturing: A Focus on Batching of Nitrate Containing Glasses
R828737C006 Sulfate and Nitrate Dynamics in the Canacadea Watershed
R828737C007 Variations in Subsurface Denitrifying and Sulfate-Reducing Microbial Populations as a Result of Acid Precipitation
R828737C008 Recycling Glass-Reinforced Thermoset Polymer Composite Materials
R828737C009 Correlating Clay Mineralogy with Performance: Reducing Manufacturing Waste Through Improved Understanding
R830420C001 Accelerated Hydrogen Diffusion Through Glass Microspheres: An Enabling Technology for a Hydrogen Economy
R830420C002 Utilization of Paper Mill Waste in Ceramic Products
R830420C003 Development of Passive Humidity-Control Materials
R830420C004 Microarray System for Contaminated Water Analysis
R830420C005 Material and Environmental Sustainability in Ceramic Processing
R830420C006 Interaction of Sealing Glasses with Metallic Interconnects in Solid Oxide and Polymer Fuel Cells
R830420C007 Preparation of Ceramic Glaze Waste for Recycling using Froth Flotation
R830420C008 Elimination of Lead from Ceramic Glazes by Refractive Index Tailoring
R830420C010 Nanostructured C6B: A Novel Boron Rich Carbon for H2 Storage
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.