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Total OH Loss Rate Measurement |
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| Authors: | Thomas A. Kovacs William H. Brune |
| Affiliation: | (1) Hampton University, 23 Tyler Street, Hampton, VA, 23668, U.S.A.;(2) The Pennsylvania University, 503 Walker, PA, 16802 University Park, U.S.A. |
| Abstract: | A new instrument has beendeveloped to measure the total decay rate of OH in ambient air. Theinstrument is based on the discharge flow technique in which OHgenerated within the instrument is reacted with ambient air pulled intothe flow tube. The OH decay is monitored by laser-induced fluorescence. Thistotal decay rate is compared to the sum of the individual decay rates ofOH with each trace species measured in the air to test for missing OHreactants. OH decay rates measured in an urban environment in thesummer of 1999 illustrates the promise of this technique. |
| Keywords: | OH chemistry chemical kinetics OH loss rate discharge-flow tube |
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