Relationships between Total Suspended Particulate, Sulfate, and Respirable Suspended Particulate Concentrations. Analysis of Data Collected in New York City

摘要

Two years of data for daily total suspended particulate, sulfate, and respirable suspended particulate concentrations measured at four stations in the New York City area are statistically analyzed. To show the variability of each pollutant data set, the mean, median, and 16th and 84th percentile values of concentration of each pollutant are summarized. To demonstrate the spatial representativeness of the concentrations of individual pollutants, the daily (24-hour) concentrations at pairs of stations were compared and correlation coefficients determined. Results indicated that sulfate concentrations varied on an area-wide basis while the concentration of respirable suspended particulates at the four stations appeared to depend on local conditions.