HEALTH HAZARDS OF PM2.5 POLLUTION TO THE PEOPLE EXPOSED TO SPORTS

PM2.5 has become one of the major pollutants endangering human health, and it is currently a hot topic in many related fields. By collecting data on air pollution and population health, it can analyze the effects of air pollution on population health in key areas, assess the risks of air pollution on population health, and provide scientific basis for effective intervention measures to protect public health. This paper collects PM2.5 monitoring data in a certain area, calculates the weighted exposure concentration of PM2.5 population of people exposed to sports, and conducts a descriptive analysis of the changes in PM2.5 exposure of people exposed to sports. According to the second-level limit of PM2.5 exposure concentration in the "Ambient Air Quality Standard", the exposure level of people exposed to sports is evaluated, and the health effects of PM2.5 exposure of people exposed to sports are evaluated using an integrated exposure-response model. We collect PM2.5 exposure samples, analyze the content of PAHs in the samples with gas chromatography-mass spectrometry (GC-MS), and use Mann-Whitney U test to analyze the influence of winter heating on the content of PAHs in the air. The cumulative toxicity equivalent dose (TEQ) method was used to quantitatively characterize the health hazards of PAHs in sports exposed populations, and the lifetime carcinogenic risk and life expectancy loss caused by them were evaluated. Monte Carlo simulation results show that 95% of the carcinogenic risk of the four carcinogenic metal elements Cr, Ni, As, and Cd in PM2.5 exceeds the safety range of carcinogenic risk safety values specified by the U.S. Environmental Protection Agency, regardless of whether it is male or female. Regardless of whether it is male or female, the carcinogenic risk rate of the four carcinogenic metal elements in PM2.5 in the outdoor air of sports stadiums is arranged in the order of chromium Cr>arsenic As>cadmium Cd>nickel Ni. During the sensitivity analysis, it was found that the uncertain factors of carcinogenic risk were mainly CA (carcinogenic metal element), ET (exposure time) and BW (weight) for both men and women. The four carcinogenic metal elements chromium Cr, nickel Ni, arsenic As, cadmium Cd have a carcinogenic risk contribution value of CA>ET>BW.