摘要
利用2016年云南省16个州市政府所在城市2016年大气细颗粒物(PM_(2.5))质量浓度数据,研究了大气PM_(2.5)浓度时空分布及可能的来源。结果表明:云南全省16个城市年均浓度为26.0μg/m3,区域分布分析表明,云南省整个区域大气PM_(2.5)质量浓度呈现东南高、西北低的特点。春天浓度最高为35.4μg/m3,秋天浓度最低为19.3μg/m3。从全年月均变化情况看,3月PM_(2.5)浓度最高,7月浓度最低。相关性分析研究表明,云南省16个城市大气PM_(2.5)来源存在较大差异。
The concentrations of fine particles （PMz5） of sixteen capital cities of Yunnan in 2016 were adopted to examine its spatial and temporal distribution and possible sources in air. The results showed that the annual average concentration of PM2.5 was 26.0μg/m^3. The concentration in the south -east was higher than in the north-west. The highest concentration in spring was 35.4μg/m^3, and the lowest was 19. 3μg/m^3 in autumn. In terms of monthly average concentration, the highest was found in March, and the lowest was July. The correlation analysis indicated that there were significant different of pollution sources in sixteen cities.
出处
《环境科学导刊》
2018年第1期28-33,共6页
Environmental Science Survey
关键词
PM2.5
污染特征
城市差异
云南
PM2. 5
pollution characteristics
differences among cities
Yunnan
