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Your search keyword '"Klouda, George A."' showing total 39 results
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39 results on '"Klouda, George A."'

4. Design scenario for the radioisotopic estimation of the biogenic component of airborne particles

Author

Hidy, George M., Eatough, Delbert J., and Klouda, George A.

Subjects
Refuse and refuse disposal -- Research, Environmental services industry, Environmental issues, Science and technology, Research
Abstract

ABSTRACT An experimental design is described to estimate the fraction of secondary fine particle from the biogenic component of volatile organic compounds (VOCs) in the atmosphere using radiocarbon isotopic abundance [...]

Published
2004

6. Radiocarbon measurements of atmospheric volatile organic compounds: quantifying the biogenic contribution

Author

Klouda, George A., Lewis, Charles W., Rasmussen, Reinhold A., Rhoderick, George C., Sams, Robert L., Stevens, Robert K., Currie, Lloyd A., Donahue, Douglas J., Jull, A.J. Timothy, and Seila, Robert L.

Subjects
Volatile organic compounds -- Research, Atmospheric research -- Methods, Carbon -- Isotopes, Environmental issues, Science and technology
Abstract

A multi-step process for measuring the biogenic contributions in the radiocarbon abundance of atmospheric volatile organic compounds (VOC) is described. It includes methods for isolating the total VOC fraction in whole air samples, for oxidizing this fraction to CO2 and for reducing the resulting CO2 to an AMS Fe-C target for 14C measurements. VOC fractions were separated from two composited urban tropospheric air samples collected in the summer of 1992 in Atlanta, GA.

Published
1996

7. Distinguishing the contributions of residential wood combustion and mobile source emissions using relative concentrations of dimethylphenanthrene isomers

Author

Benner, Bruce A., Jr., Wise, Stephen A., Currie, Lloyd A., Klouda, George A., Klinedinst, Donna B., Zweidinger, Roy B., Stevens, Robert K., and Lewis, Charles W.

Subjects
Wood -- Combustion, Motor vehicles -- Environmental aspects, Combustion gases -- Health aspects, Environmental issues, Science and technology
Abstract

Residential wood combustion (RWC) and motor vehicle (MV) emissions were characterized as the two major sources in an analysis of air particulate matter samples that were collected in Boise, ID. The samples were subjected to gas chromatography with mass spectrometric detection. Levels of source contributions were measured by comparing polycyclic aromatic hydrocarbon concentrations from burning soft woods, RWC and MV. A consistent relationship was observed among the relative concentrations and their distribution between the two major sources.

Published
1995

8. Sources of urban contemporary carbon aerosol

Author

Hildemann, Lynn M., Klinedinst, Donna B., Klouda, George A., Currie, Lloyd A., and Cass, Glen R.

Subjects
Los Angeles Metropolitan Area -- Environmental aspects, Aerosols -- Research, Carbonates -- Research, Environmental issues, Science and technology
Abstract

The 12C and 14C content of carbonaceous aerosol emmissions collected from major sources in the Los Angelese basin atmosphere is measured. Meanwhile, an emission inventory is developed to predict the concentrations of fine contemporary vs fossil carbon at two ambient sites. Predictions are compared with ambient sample analyses results. The major sources of primary fossil and contemporary carbonaceous aerosol are described.

Published
1994

14. Ink Jet Metrology: New Developments at NIST to Produce Test Materials for Security Applications

Author

Verkouteren, Michael, primary, Gillen, Greg, additional, Staymates, Matthew, additional, Verkouteren, Jennifer, additional, Windsor, Eric, additional, Walker, Marlon, additional, Zeissler, Cynthia, additional, Najarro, Marcela, additional, Klouda, George, additional, Brewer, Tim, additional, Staymates, Jessica, additional, Fletcher, Robert, additional, Ott, Julie, additional, Barr, Timothy, additional, Dickinson, Sarah, additional, Grander, Jessica, additional, Halter, Melissa, additional, and Sievers, Hannah, additional

Published
2011
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22. 14C Measurements of Sub-Milligram Carbon Samples from Aerosols

Author

Weissenbök, Roland, primary, Biegalski, Steven R., additional, Currie, Lloyd A., additional, Klinedinst, Donna B., additional, Golser, Robin, additional, Klouda, George A., additional, Kutschera, Walter, additional, Priller, Alfred, additional, Rom, Werner, additional, Steier, Peter, additional, and Wild, Eva, additional

Published
1997
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