Relationship between meteorological conditions and atmospheric PM2.5 in a uranium mining area and analysis of pollution sources

Combining the special facilities of uranium mine with villages and towns, this paper analyzed the correlation between PM 2.5 and atmospheric temperature, humidity, air pressure, wind speed and air index analyzed by PM 2.5 . Humidity, atmospheric pressure and air quality index were positively correlated with PM 2.5 concentration, while temperature and wind speed were negatively correlated with PM 2.5 concentration, while altitude had no correlation with PM 2.5 concentration. The seasonal variation of PM 2.5 concentration in this area was as follows: winter (31.5 ㎍/m 3 ) > spring (25.78 ㎍/m 3 ) > autumn (15.59 ㎍/m 3 ) > summer (10.61 ㎍/m 3 ). PMF model (orthogonal matrix factor analysis) was used to analyze various pollution sources. It was found that the contribution of various pollution sources was soil source (33.7%), combustion source (19.2%), traffic source (18.2%), industrial source (15.0%) and natural source (3.3%).