An airborne compatible photofragmentation two-photon laser-induced fluorescence instrument for measuring background tropospheric levels of NO, NOx, and NO2

S. T. Sandholm; J. D. Bradshaw; K. S. Dorris; M. O. Rodgers; D. D. Davis

doi:10.1029/jd095id07p10155

An airborne compatible photofragmentation two-photon laser-induced fluorescence instrument for measuring background tropospheric levels of NO, NO_x, and NO₂

S. T. Sandholm, J. D. Bradshaw, K. S. Dorris, M. O. Rodgers, D. D. Davis

Transportation Analytics & Decision Scie

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Abstract

This instrumental technique is based on the direct spectroscopic detection of NO via the TP-LIF methodology. The measurement of NO_x(NO+NO₂), and subsequently NO₂, is accomplished by the protofragmentation of NO₂ at 353nm via a XeF excimer laser. The resultant NO photofragment is then quantitatively detected using the TP-LIF technique. The laser photolysis efficiency for NO₂ is typically 60% for NO₂ photolysis cell residence times of <0.5s. The limit of detection (S/N=2) for the described PF/TP-LIF instrument is 3.5pptv for NO (2min integration time) and 10pptv for NO₂ (6min integration time). An assessment of chemical interferences in this system revealed no significant problems. -from Authors

Original language	English
Pages (from-to)	10,155-10,161
Journal	Journal of Geophysical Research: Biogeosciences
Volume	95
Issue number	D7
DOIs	https://doi.org/10.1029/jd095id07p10155
State	Published - 1990

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@article{4a336e60464d408dbe0dbe555832f714,

title = "An airborne compatible photofragmentation two-photon laser-induced fluorescence instrument for measuring background tropospheric levels of NO, NOx, and NO2",

abstract = "This instrumental technique is based on the direct spectroscopic detection of NO via the TP-LIF methodology. The measurement of NOx(NO+NO2), and subsequently NO2, is accomplished by the protofragmentation of NO2 at 353nm via a XeF excimer laser. The resultant NO photofragment is then quantitatively detected using the TP-LIF technique. The laser photolysis efficiency for NO2 is typically 60% for NO2 photolysis cell residence times of <0.5s. The limit of detection (S/N=2) for the described PF/TP-LIF instrument is 3.5pptv for NO (2min integration time) and 10pptv for NO2 (6min integration time). An assessment of chemical interferences in this system revealed no significant problems. -from Authors",

author = "Sandholm, {S. T.} and Bradshaw, {J. D.} and Dorris, {K. S.} and Rodgers, {M. O.} and Davis, {D. D.}",

year = "1990",

doi = "10.1029/jd095id07p10155",

language = "English",

volume = "95",

pages = "10,155--10,161",

journal = "Journal of Geophysical Research: Biogeosciences",

issn = "0148-0227",

publisher = "American Geophysical Union",

number = "D7",

}

An airborne compatible photofragmentation two-photon laser-induced fluorescence instrument for measuring background tropospheric levels of NO, NO_x, and NO₂. / Sandholm, S. T.; Bradshaw, J. D.; Dorris, K. S. et al.
In: Journal of Geophysical Research: Biogeosciences, Vol. 95, No. D7, 1990, p. 10,155-10,161.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - An airborne compatible photofragmentation two-photon laser-induced fluorescence instrument for measuring background tropospheric levels of NO, NOx, and NO2

AU - Sandholm, S. T.

AU - Bradshaw, J. D.

AU - Dorris, K. S.

AU - Rodgers, M. O.

AU - Davis, D. D.

PY - 1990

Y1 - 1990

N2 - This instrumental technique is based on the direct spectroscopic detection of NO via the TP-LIF methodology. The measurement of NOx(NO+NO2), and subsequently NO2, is accomplished by the protofragmentation of NO2 at 353nm via a XeF excimer laser. The resultant NO photofragment is then quantitatively detected using the TP-LIF technique. The laser photolysis efficiency for NO2 is typically 60% for NO2 photolysis cell residence times of <0.5s. The limit of detection (S/N=2) for the described PF/TP-LIF instrument is 3.5pptv for NO (2min integration time) and 10pptv for NO2 (6min integration time). An assessment of chemical interferences in this system revealed no significant problems. -from Authors

AB - This instrumental technique is based on the direct spectroscopic detection of NO via the TP-LIF methodology. The measurement of NOx(NO+NO2), and subsequently NO2, is accomplished by the protofragmentation of NO2 at 353nm via a XeF excimer laser. The resultant NO photofragment is then quantitatively detected using the TP-LIF technique. The laser photolysis efficiency for NO2 is typically 60% for NO2 photolysis cell residence times of <0.5s. The limit of detection (S/N=2) for the described PF/TP-LIF instrument is 3.5pptv for NO (2min integration time) and 10pptv for NO2 (6min integration time). An assessment of chemical interferences in this system revealed no significant problems. -from Authors

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U2 - 10.1029/jd095id07p10155

DO - 10.1029/jd095id07p10155

M3 - Article

AN - SCOPUS:0025625153

SN - 0148-0227

VL - 95

SP - 10,155-10,161

JO - Journal of Geophysical Research: Biogeosciences

JF - Journal of Geophysical Research: Biogeosciences

IS - D7

ER -

An airborne compatible photofragmentation two-photon laser-induced fluorescence instrument for measuring background tropospheric levels of NO, NO_x, and NO₂

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