Claremont Atmospheric Free-Radical Study: Measurements of Formaldehyde, HydrogenPeroxide, Nitric Acid, Nitrous Acid, Peroxyacetyl Nitrate, Nitrogen Dioxide, Nitrogen Oxides, Ozone, Carbon Monoxide, Hydrocarbons (C1-C12), and Carbonyl Compounds (C1-Benzald

摘要

The 1993 Claremont Free Radical Study centered around laser induced fluorescencemeasurements of the free radical over a 25 day period in September 1993. Continuous high quality data was obtained on NO2, NOx, peroxyacetyl nitrate, ozone, H2O2, HCHO, and HONO over most of the sampling period and periodic measurement were made on NO3 and HNO3. Integrated sampling techniques were employed to obtain 4 hour average measurement of carbonyls, (C1-Benzaldehyde including CO) and hydrocarbons (C1-C12 including CH4). Tunable Diode Laser, Differential Optical Absorption, Chemiluminescence and UV-photometric devices were used for these measurements.