气象条件对新疆4个城市主要大气污染物的影响

Influence of meteorological conditions on the main air pollutants in four cities in Xinjiang

目的通过收集2009—2015年新疆4个城市主要大气污染物和气象数据资料,分析气象条件对主要大气污染物的影响。方法采用统计描述和Pearson相关分析等分析气象因素和大气污染物的相关性。结果乌鲁木齐SO_2浓度以及NO_2浓度远超过其他3个城市,且NO_2浓度每年均超过《环境空气质量标准》限值(年平均40μg/m^3),污染较为严重,历年最高分别为(92.5±83.4)、(83.4±68.1)μg/m^3。4个城市PM_(10)浓度均超过限值40μg/m^3,且喀什PM_(10)浓度远远超过其他3城市,最高为(345.7±170.5)μg/m^3。4个城市气象因子与主要污染物之间存在较强的相关。结论新疆4个城市大气主要污染物SO_2及NO_2浓度总体呈下降趋势;在新疆范围内气象因子与污染物之间存在正相关。

[Objective] To analyze the influence of meteorological conditions on the main air pollutants by collecting the monitoring data of main pollutants and meteorological data in four cities in Xinjiang from 2009-2015.[Methods] The correlation between meteorological factors and air pollutants were analyzed by statistical description and Pearson correlation analysis.[Results] The concentrations of SO2 and NO2 in Urumqi were far above the other three cities, and the NO2 concentration was higher than the annual mean limit of ＂ambient air quality standard＂（40 μg/m3）he pollution was serious. The highest annual concentration was（92.5±83.4）and（83.4±68.1）μg/m3.respectively. The concentrations of PM（10） in four cities were all above the limit of 40 μg/m3,and the concentration of PM（10） in Kashgar was far more than the other three cities, the highest annual concentration was（345.7±170.5）μg/m3.The concentrations of main pollutants had significant correlation with the meteorological factors in four cities.[Conclusion] The concentrations of SO2 and NO2 in the four cities of Xinjiang show a decreasing trend. There is a positive connection between the meteorological factors and the pollutants in Xinjiang.