| Title: |
A Guide for Assessing Biodegradation and Source Identification of Organic Groundwater Contaminants Using Compound Specific Isotope Analysis (CSIA)
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| Resource Type: |
document --> technical publication --> report
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| Country: |
USA
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| Year: |
2009 |
| Availability: |
EPA 600-R-08-148
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| Author 1/Producer: |
US Environmental Protection Agency (US EPA)
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| Author / Producer Type: |
Agency, regulator or other governmental or inter-governmental body
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| Format (e.g. PDF): |
PDF
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| Size: (e.g. 20mb) |
3.6
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EUGRIS Keyword(s): |
Contaminated land-->Remediation options-->MNA
Contaminated land-->Soil and groundwater processes-->Geochemistry
Contaminated land-->Soil and groundwater processes-->Microbiology
Groundwater protection-->Groundwater processes-->Geochemistry
Groundwater protection-->Groundwater processes-->Groundwater processes overview
Groundwater protection-->Groundwater processes-->Microbiology
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| Short description: |
When organic contaminants are degraded in the environment, the ratio of
stable isotopes will often change, and the extent of degradation
can be recognized and predicted from the change in the ratio of
stable isotopes. Recent advances in analytical chemistry make it
possible to perform Compound Specific Isotope Analysis (CSIA) on
dissolved organic contaminants such as chlorinated solvents,
aromatic petroleum hydrocarbons, and fuel oxygenates, at
concentrations in water that are near their regulatory
standards. The traditional approach for monitoring of
concentrations of contaminants at sites often does not offer
adequate information about the processes that are responsible
for removal of the contaminants. Stable isotope analyses can
provide an in-depth understanding of biodegradation or abiotic
transformation processes in contaminated aquifers. Because CSIA
is a new approach, there are no widely accepted standards for
accuracy, precision and sensitivity, and no established
approaches to document accuracy, precision, sensitivity and
representativeness. This Guide provides general recommendations
on good practice for sampling, for measurement, for data
evaluation and for interpretation in CSIA
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Submitted By:
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Professor Paul Bardos WhoDoesWhat?
Last update: 01/03/2009
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