2014和2015年嵊州市环境空气质量分析

Analysis of characteristics of air quality in Shengzhou between 2014 and 2015

目的了解嵊州市环境空气质量状况,为预防大气污染引起的相关疾病提供科学依据。方法对嵊州市2014年、2015年空气质量指数(AQI)等空气质量监测数据进行处理和分析。结果嵊州市2014年和2015年空气质量达标率分别为76.3%和81.81%,空气主要污染物为PM_(2.5),以7月份、8月份和9月份空气质量最好,二级达标率100%,1月份、12月份空气质量最差,2015年的SO_2、PM_(10)和PM_(2.5)空气质量优于2014年(t分别为3.657、2.553、2.705,P值均<0.05);新城区的SO_2空气质量优于旧城区(t=3.657,P<0.05),新城区PM_(10)、O_(3max 8 h)和NO_2空气质量差于旧城区(t分别为5.833、-10.160和-3.839,P<0.05)。结论嵊州市空气环境质量随季节改变呈明显变化趋势,应根据空气环境质量调整户外活动时间,预防相关疾病的发生。

Objective To understand air quality in shengzhou and provide scientific evidence for preventing the diseases caused by air pollution. Methods Air quality index （AQI）and the data of air quality monitoring in Shengzhou in 2014 and 2015 were collected and analyzed in the paper. Results The qualified rates of air quality were 76. 3% and 81.81% in 2014 and 2015. The primary pollutants were PM25 and the air quality were best from July to September months（ 100% ）. The lowest qualified rates of air pollution were in January and December;The pollution concentrations of PM10, SO2 , PM2.5 in 2015 were lower than those in 2014 （t = 3. 657,2. 553 and 2. 705,P 〈 0. 05） ;The air quality relative to SO2 in new section of the city is better than that of in the old section of the city （ t = 3. 657, P 〈 0. 05 ）. And the air quality of relative to PM10, O3max8h, NO2 were worse than those in the old the section of the city （t = 5. 833 ,-10. 160, and-3. 839 respectively, P 〈 0. 05 ）. Conclusion The air quality in Shengzhou varies have seasons obviously. Outdoor activities should be adjusted according to air quality for preventing the occurrence of related diseases.