The relationship between fine particle light scattering extinction coefficient (bsp), fine particle chemical composition and relative humidity (RH) were measured during an experiment in Riverside, CA during a five week period in August and September of 1983. These experiments involved the use of an integrating nephelometer as well as a system for controlling the temperature and RH of the air directly upstream of the nephelometer. Integration of experimental results from the humidograph, thermidograph and ambient light scattering measurements indicate that during the time period of our study, the aerosol was typically hydrated, even at ambient RH values less than the aerosol's deliquescence humidity. In addition, the aerosol frequently exhibited deliquescence phenomena that was enhanced by thermally stripping the more volatile compounds from the particles but was not enhanced by addition of gaseous NH3.
|Original language||English (US)|
|Title of host publication||Unknown Host Publication Title|
|Number of pages||4|
|State||Published - 1984|
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