Measurements comparison of oxygenated volatile organic compounds at a rural site during the 1995 SOS Nashville Intensive. Apel, E., C., Calvert, J., G., Riemer, D., Pos, W., Zika, R., Kleindienst, T., E., Lonneman, W., A., Fung, K., Fujita, E., Shepson, P., B., Starn, T., K., & Roberts, P., T. Journal of Geophysical Research-Atmospheres, 103(D17):22295-22316, 1998.
abstract   bibtex   
Simultaneous measurements of oxygenated volatile organic compounds (OVOCs) by four independent research groups at the Youth Incorporated (YI) site during the 1995 Southern Oxidants Study Nashville Intensive, between July 4 and 30, 1995, provided a unique opportunity to compare results from different techniques. 2,4-dinitrophenylhydrazine (DNPH) coated C18 (C18/sub AtmAA/) and Si-Gel (Si-Gel/sub MTE/) cartridges were compared with each other and with two sorbent-based preconcentration gas chromatographic (GC) techniques coupled with mass spectrometric (MS) detection (GC/MS/sub UM/ and GC/MS/sub PU/) or flame ionization detection GC/FID/sub UM/. The experiment consisted of both a laboratory (part A) and an ambient air comparison (part B). In part A of the study, standard mixtures of OVOCs were diluted in a flowing gas stream of humidified, purified air, both with and without addition of O/sub 3/, and distributed to participant's instrumentation. Concentrations were compared with the expected values based on known cylinder concentrations and dilution factors. In part B of the study, the instruments sampled ambient air from a common glass manifold. Species intercompared were formaldehyde, acetaldehyde, acetone, and propanal. The C18/sub AtmAA/ data were typically higher than the Si-Gel/sub MTE/ data for the four intercompared compounds, and possible explanations are given. Agreement between the cartridge systems and the GC/MS, GC/FC systems for comeasured compounds was poorer than expected but improved towards the end of the experiment. The GC/MS systems tracked each other well for acetone, but there were differences in the absolute concentration values. These results show that improvements in the accuracy and comparability of techniques should be of high priority.
@article{
 title = {Measurements comparison of oxygenated volatile organic compounds at a rural site during the 1995 SOS Nashville Intensive},
 type = {article},
 year = {1998},
 keywords = {1995 SOS Nashville Intensive,2,4-dinitrophenylhydrazine coated C18,AD 1995 07 04 to 30,Acetaldehyde,Acetone,Air pollution measurement,Ambient air comparison,C18/sub AtmAA/ data,Cartridge systems,Dilution,Flame ionization detection,Flowing gas stream,Formaldehyde,Mass spectrometric detection,Measurements comparison,O/sub 3/,Organic compounds,Oxygenated volatile organic compounds,Propanal,Rural site,Si-Gel cartridges,Si-Gel/sub MTE/ data,Sorbent-based preconcentration gas chromatographic,Southern Oxidants Study Nashville Intensive,Standard mixtures,United States,Youth Incorporated site,ovoc},
 pages = {22295-22316},
 volume = {103},
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 last_modified = {2015-02-12T20:24:28.000Z},
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 source_type = {Journal Article},
 notes = {<m:note>Article<m:linebreak/>American Geophys. Union</m:note>},
 abstract = {Simultaneous measurements of oxygenated volatile organic compounds (OVOCs) by four independent research groups at the Youth Incorporated (YI) site during the 1995 Southern Oxidants Study Nashville Intensive, between July 4 and 30, 1995, provided a unique opportunity to compare results from different techniques. 2,4-dinitrophenylhydrazine (DNPH) coated C18 (C18/sub AtmAA/) and Si-Gel (Si-Gel/sub MTE/) cartridges were compared with each other and with two sorbent-based preconcentration gas chromatographic (GC) techniques coupled with mass spectrometric (MS) detection (GC/MS/sub UM/ and GC/MS/sub PU/) or flame ionization detection GC/FID/sub UM/. The experiment consisted of both a laboratory (part A) and an ambient air comparison (part B). In part A of the study, standard mixtures of OVOCs were diluted in a flowing gas stream of humidified, purified air, both with and without addition of O/sub 3/, and distributed to participant's instrumentation. Concentrations were compared with the expected values based on known cylinder concentrations and dilution factors. In part B of the study, the instruments sampled ambient air from a common glass manifold. Species intercompared were formaldehyde, acetaldehyde, acetone, and propanal. The C18/sub AtmAA/ data were typically higher than the Si-Gel/sub MTE/ data for the four intercompared compounds, and possible explanations are given. Agreement between the cartridge systems and the GC/MS, GC/FC systems for comeasured compounds was poorer than expected but improved towards the end of the experiment. The GC/MS systems tracked each other well for acetone, but there were differences in the absolute concentration values. These results show that improvements in the accuracy and comparability of techniques should be of high priority.},
 bibtype = {article},
 author = {Apel, E C and Calvert, J G and Riemer, D and Pos, W and Zika, R and Kleindienst, T E and Lonneman, W A and Fung, K and Fujita, E and Shepson, P B and Starn, T K and Roberts, P T},
 journal = {Journal of Geophysical Research-Atmospheres},
 number = {D17}
}
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