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Prototype FAGE determination of NO2 |
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| Authors: | L A George R J O'Brien |
| Institution: | (1) Chemistry Department, Portland State University, 97207 Portland, OR, U.S.A.;(2) Environmental Sciences Doctoral Program, Portland State University, 97207 Portland, OR, U.S.A. |
| Abstract: | A low pressure laser-excited-fluorescence technique (FAGE) for the direct determination of atmospheric NO2 has been developed. Using a frequency-doubled Nd-YAG pump laser and a signal collection time of 20 s (10 s each signal and background) a detection limit of 450 pptv is calculated under laboratory conditions. Improved sensitivities will be possible with a higher repetition rate laser and lower fluorescence cell pressures. |
| Keywords: | Nitrogen dioxide fluorescence measurement troposphere instrumentation |
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