%0 Journal Article %1 Brown:2002p368 %A Brown, S %A Stark, H %A Ravishankara, A. R %D 2002 %J Applied Physics B-Lasers and Optics %K imported %N 2-3 %P 173--182 %R Doi 10.1007/S00340-002-0980-Y %T Cavity ring-down spectroscopy for atmospheric trace gas detection: application to the nitrate radical (NO3) %U http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000178913900005 %V 75 %X Cavity ring-down spectroscopy is a relatively new and quite sensitive technique for the measurement of gas-phase optical extinction. It holds the potential for simple, direct and sensitive measurement of the concentrations of a variety of trace gases in the atmosphere. For example, detection of the nitrate radical, NO3. and its companion, dinitrogen pentoxide, N2O5, has been demonstrated with a sensitivity of 0.25 pptv (1sigma). This paper considers several of the requirements for the application of cavity ring-down spectroscopy to concentration measurements of trace gases in ambient air. These include detection sensitivity, measurement of an accurate zero in the presence of competing absorbers, cavity stability and mirror cleanliness, laser line-width effects, saturation effects, Rayleigh scattering, the influence of atmospheric aerosols and sampling issues for reactive species. Examples drawn from our work on NO3 and N2O5 detection in the field illustrate these considerations.

@article{Brown:2002p368, abstract = {Cavity ring-down spectroscopy is a relatively new and quite sensitive technique for the measurement of gas-phase optical extinction. It holds the potential for simple, direct and sensitive measurement of the concentrations of a variety of trace gases in the atmosphere. For example, detection of the nitrate radical, NO3. and its companion, dinitrogen pentoxide, N2O5, has been demonstrated with a sensitivity of 0.25 pptv (1sigma). This paper considers several of the requirements for the application of cavity ring-down spectroscopy to concentration measurements of trace gases in ambient air. These include detection sensitivity, measurement of an accurate zero in the presence of competing absorbers, cavity stability and mirror cleanliness, laser line-width effects, saturation effects, Rayleigh scattering, the influence of atmospheric aerosols and sampling issues for reactive species. Examples drawn from our work on NO3 and N2O5 detection in the field illustrate these considerations.}, added-at = {2010-06-22T19:38:37.000+0200}, affiliation = {Brown, SS NOAA Aeron Lab, R-AL2,325 Broadway, Boulder, CO 80305 USA NOAA Aeron Lab, R-AL2,325 Broadway, Boulder, CO 80305 USA NOAA Aeron Lab, Boulder, CO 80305 USA Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA Univ Colorado, Dept Chem {\&} Biochem, Boulder, CO 80309 USA}, author = {Brown, S and Stark, H and Ravishankara, A. R}, biburl = {https://www.bibsonomy.org/bibtex/28976aa4e81b5317255689fc2799cd341/gsmith}, date-added = {2010-03-10 16:47:12 -0500}, date-modified = {2010-04-29 13:23:09 -0400}, doi = {Doi 10.1007/S00340-002-0980-Y}, interhash = {e30d4c559d2f491e020bcaf1f173ecc7}, intrahash = {8976aa4e81b5317255689fc2799cd341}, journal = {Applied Physics B-Lasers and Optics}, keywords = {imported}, label = {rec-number 2081}, local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Applied%20Physics%20B-Lasers%20and%20Optics/2002/Applied%20Physics%20B-Lasers%20and%20Optics,%2075,%20173-182%202002.pdf}, month = Sep, note = {609PJ Times Cited:22 Cited References Count:48}, number = {2-3}, pages = {173--182}, pmid = {000178913900005}, rating = {0}, timestamp = {2010-06-22T19:38:58.000+0200}, title = {Cavity ring-down spectroscopy for atmospheric trace gas detection: application to the nitrate radical (NO3)}, uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p368}, url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000178913900005}, volume = 75, year = 2002 }