2016~2018年新乡市空气质量变化特征

Characteristics of Air Quality Change in Xinxiang City From 2016 to 2018

分析了2016~2018年新乡市区空气质量和空气中污染物的变化特征和趋势,为改善空气质量提供了依据。利用2016~2018年新乡市区环境空气质量监测资料,结合空气质量指数(AQI)和3种不同污染物PM 2.5、SO 2、NO 2还有其他相关资料进行了研究。结果表明:2016~2018年空气质量有逐年好转的趋势,但空气质量集中在轻度污染,空气污染物PM 2.5、NO 2年平均浓度均高于国家环境空气质量年平均二级标准,SO 2年平均浓度虽然低于国家环境空气质量年平均二级标准,但取暖季浓度相对较高。空气质量指数(AQI)数值和3种空气污染物浓度大小依次为取暖季均值>年均值>非取暖季均值。新乡市区总体空气质量较差,空气污染物含量较高,应进一步采取有效的防治措施,提高空气质量。

Objective:The study analyzed the change characteristics and trend of air quality and air pollutants in Xinxiang City from 2016 to 2018,which provided basis for improving air quality.Methods:Based on the data of air quality in Xinxiang City from 2016 to 2018,this paper analyzed the changing trend of the AQI and three different pollutants(PM 2.5,SO 2 and NO 2).Results:In 2016-2018,the air quality tended to improve year by year,but the air quality was in light pollution.The annual average concentration of PM 2.5 and NO 2 were higher than the national standard.Although the annual average concentration of SO 2 was lower than the national standard,it was denser in the warm season.Air quality index(AQI)and the three air pollutants were highest in heating season,followed byannual average and then non-heating seasons.Conclusion:The air quality of Xinxiang City was bad,and the concentration of air pollutants was high,so effective control measures should be taken to improve air quality.