作　　者： (黄世芹）; (彭科曼）; (陈海凤）;

机构地区： 贵州省贵阳市气象局,贵州贵阳550001

出　　处： 《贵州气象》 2017年第4期52-56,共5页

摘　　要： 利用贵阳市9个国控空气自动监测站2013年1月—2016年6月的逐日污染物监测资料,以涵盖可吸入颗粒物(PM10)、细颗粒物(PM2.5)、二氧化硫(SO2)、二氧化氮(NO2)、一氧化碳(CO)、臭氧(O3)6种污染物的空气质量指数(Air Quality Index,AQI)来作为表征空气质量的特性值,用统计分析方法来对贵阳市空气质量特征进行分析研究。结果表明:(1)贵阳市总体空气质量较好,首要污染物以PM2.5和PM10为主,而又以PM2.5居多。(2)贵阳市月平均AQI值在1月最高,7月最低。6种污染物中,O3总体呈波动型分布,峰值分别出现在5月和10月,11月为全年最低值。除O3外,其余各污染物均呈现以7月为低谷,12月—次年1月为高峰的分布特征。(3)四季中,AQI值分布为冬季>春季>秋季>夏季。各污染物中,除O3外,其余浓度均表现为冬高夏低,而O3浓度则为春高冬低。 According to the daily pollutant monitoring data of 9 state -controlled air automatic monitoring stations in Guiyang from January 2013 to June 2016, using the air quality index （AQI） of these six air pollutants as the characteristic value of air quality including inhalable particles （ PM2.5 ）, sulfur dioxide （ SO2 ）, nitrogen dioxide （ NO2）, carbon monoxide （CO） and ozone （O3 ）, the air quality characteristics of Guiyang City were analyzed by statistical analysis method. The results show that：1. The overall air quality of Guiyang is good. The main pollutants of Guiyang is PM2.5 and PM10,and the majority is PM2.5.2. The Monthly average AQI of Guiyang is the highest in January, the lowest in July. For these six air pollutants , 03 showed a wave -type distribution,with peaks occurring in May and October respectively and the lowest in November. The other five air pollutants are shown the lowest in July and the highest from December to the following January. 3. The seasonal distribution of AQI in a descending as winter, spring, autumn and summer. The concentration of O3 is the highest in spring and the lowest in winter. The concentration of the other five air pollutants is the highest in winter and the lowest in summer.

关 键 词： 首要污染物 污染物浓度 月变化 季变化