You are here:
MODELING THE TIME SERIES OF RESPIRABLE SUSPENDED PARTICLES AND CARBON MONOXIDE FROM MULTIPLE SMOKERS: VALIDATION IN TWO PUBLIC SMOKING LOUNGES
Citation:
Klepeis, N., W.R. Ott, AND P. Switzer. MODELING THE TIME SERIES OF RESPIRABLE SUSPENDED PARTICLES AND CARBON MONOXIDE FROM MULTIPLE SMOKERS: VALIDATION IN TWO PUBLIC SMOKING LOUNGES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-95/078 (NTIS PB95225496).
Description:
The Multiple Cigarette Exposure Model (MCEM) was applied to ten field studies of the time series of carbon monoxide (CO), respirable suspended particles (RSP), and number of smokers, conducted inside cigarette smoking lounges at the San Francisco Airport (SFO) and the San Jose International Airport (SJC). he studies were conducted inside glass-enclosed rooms with rows of seats and the volumes of the rooms were 747.7 and 238.2 cubic meters for SFO and SJC, respectively. he mean time series for PM3.5 RSP was determined by averaging the readings (two-minute averages) from three piezobalances widely spaced in the lounge. t eight out of the ten studies instantaneous CO concentrations were measured every two minutes from a single monitor at the center of the room. he durations of the study visits ranged from 60 to 146 minutes and the average number of smokers ranged from 3 to about 14 smokers throughout all ten studies. fter the background concentration was subtracted, the average CO concentration over all visits ranged from 0.41 to 1.2 ppm and the average RSP concentration ranged from 60 to 177 ug/m3. uring two study visits the air exchange rates of the lounges were measured by waiting until nearly all of the smokers had left, elevating the levels of CO and RSP by smoking several cigars, and then observing the exponential decay of the pollutant concentrations. he average source strengths for the visits where the air exchange rates were determined were 11.1 mg/min for CO and 1.34 mg/min for RSP. here was surprisingly good agreement between observed concentrations and those predicted by MCEM in the two visits in which the air exchange rate was measured (mean differences of 5% or less, R2 values ranging from 0.59 to 0.94, slopes near 1, and near-zero y-intercepts).
URLs/Downloads:
MODELING THE TIME SERIES OF RESPIRABLE SUSPENDED PARTICLES AND CARBON MONOXIDE FROM MULTIPLE SMOKERS: VALIDATION IN TWO PUBLIC SMOKING LOUNGES