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EVALUATION OF A REAL-TIME MONITOR FOR PARTICLE-BOUND PAH IN AIR
Citation:
Wilson, N., R. Barbour, R. Burton, J. Chuang, AND M. Ramamurthi. EVALUATION OF A REAL-TIME MONITOR FOR PARTICLE-BOUND PAH IN AIR. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-94/059 (NTIS PB94157401), 1994.
Description:
An instrument for semi-quantitative real-time measurement of polycyclic aromatic hydrocarbons (PAH) on airborne fine particles was evaluated. he instrument operates on the principle of photoelectric ionization of PAH adsorbed on particle surfaces, with resulting loss of photoelectrons and subsequent measurement of the remaining positively charged particles. e investigated the characteristic performance of the instrument in both chamber and field studies. his performance included: selectivity for fine particles, response to PAH only on particles versus response to PAH in the vapor phase, accuracy compared to integrated sampling, interferences, rapidity of response, limits of detection, bias, ease of operation, reproducibility, calibration, reliability, and ease of field operation and maintenance. he instrument performed well and appears to be suitable for screening air for particle-bound PAH in a variety of microenvironments, as well as for use in estimating human exposure related to various activities that may generate PAH.
