| NSF Org: |
EAR Division Of Earth Sciences |
| Recipient: |
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| Initial Amendment Date: | September 6, 2009 |
| Latest Amendment Date: | September 6, 2009 |
| Award Number: | 0929981 |
| Award Instrument: | Standard Grant |
| Program Manager: |
Russell Kelz
EAR Division Of Earth Sciences GEO Directorate for Geosciences |
| Start Date: | September 15, 2009 |
| End Date: | August 31, 2012 (Estimated) |
| Total Intended Award Amount: | $83,171.00 |
| Total Awarded Amount to Date: | $83,171.00 |
| Funds Obligated to Date: |
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| ARRA Amount: | $83,171.00 |
| History of Investigator: |
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| Recipient Sponsored Research Office: |
2550 NORTHWESTERN AVE # 1100 WEST LAFAYETTE IN US 47906-1332 (765)494-1055 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
2550 NORTHWESTERN AVE # 1100 WEST LAFAYETTE IN US 47906-1332 |
| Primary Place of
Performance Congressional District: |
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| Unique Entity Identifier (UEI): |
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| Parent UEI: |
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| NSF Program(s): | Integrat & Collab Ed & Rsearch |
| Primary Program Source: |
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| Program Reference Code(s): |
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| Program Element Code(s): |
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| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.050 |
ABSTRACT
0929981
Michalski
This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).
This award will fund developing a Laser Decomposition Isotope Interface (LADII) for preparing very small (nanomolar) quantities of compounds for oxygen isotope analysis in sulfate and nitrate. The system to be developed will use a carbon dioxide laser to produce sufficient gas from nonamolar samples to also perform delta 34S, delta 15N and Delta 33S analysis. In addition, triple oxygen isotope analysis will be possible at ~0.2 permil precision. The enhanced precision and smaller sample size will allow oxygen isotope analysis in perchlorate, phosphate and oxalate, which are common contaminants. The PI will also analyze precipitation samples to better understand isotopic distributions which will, in turn, assist in constraining atmospheric chemical transport models. Atmospheric deposition and soil biogeochemistry will be assessed from central Chinese speleothem analysis. Watershed samples from the desert southwest and the central US will be analyzed for sulfate and nitrate isotope ratios. The LADII interface is expected to have broad applicability due to its capability for rapid, precise sample processing and its ability to process extremely limited sample quantities. Studies heretofore hindered by sample size will be open to isotopic investigations. The instrument development will involve three PhD, one MS, and three undergraduate students working in the PI?s laboratory. The semi-automated system will also reduce the person-hours needed for analysis - releasing time for additional scientific directions and efforts.
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