Assessment of Contemporary Carbon Combustion Source Contributions to Urban Air Particulate Levels Using Carbon- 14 Measurements John A. Cooper* Oregon Graduate Center, Beaverton, Oregon 97006
Lloyd A. Currie and George A. Klouda National Bureau
of Standards, Washington, D.C. 20234
w Measurement of carbon-14 activities with new low-level counting methods has been demonstrated to be an effective tool for assessing the contribution of contemporary carbon combustion sources to the mass collected with typical highvolume air samplers. This study represents the first time that radiocarbon measurements have been applied to fine particles (
