摘要
目的了解2016年宁波市空气污染物的时间、空间分布特征。方法收集宁波市空气质量实时发布系统2016年发布的空气质量指数(AQI)日报数据,分析SO_2、NO_2等6种主要空气污染物的污染情况及其时间、空间分布特征。结果 366 d中,310 d为空气质量优/良(AQI≤100),56 d出现空气污染(AQI>100);NO_2和PM_(2.5)超过国家环境空气质量二级标准,SO_2、PM_(10)、CO和O3-8H符合二级标准;PM_(2.5)是宁波市的首要空气污染物。空气污染物浓度变化具有一定的季节性,SO_2、NO_2、PM_(10)、CO和PM_(2.5)浓度1月和12月较高,7月、8月和9月较低;O3-8H浓度5月最高,12月最低。空气污染物的空间分布总体呈现北高南低的态势,但不同污染物的分布有所不同。结论宁波市空气污染问题较为突出,空气污染物总体分布呈现北高南低的态势,且具有一定季节性。
Objective To understand the temporal and spatial characteristics of air pollutants in Ningbo. Methods The airquality index （AQI ） data of Ningbo in 2016 was used to study the temporal and spatial variations of air pollutants,includingSO2,NO2,PM10,CO,O3-8H,PM2.5. Results AQIs in 310 days were less than or equal to 100,and AQIs in the other 56days were greater than 100. The levels of NO2 and PM2.5 were higher than National Ambient Air Quality Standard Class II,andthose of SO2,PM10,CO,O3-8H meted Class II. PM2.5 was the primary air pollutant in Ningbo. The seasonal variation of airpollutant concentration was obvious. The concentrations of SO2,NO2,PM10,CO,PM2.5 were high in January and December andlow in July,August and September. The concentrations ofO3-8H were high in May,and low in December. In terms of spatialheterogeneity,the concentrations of air pollutants were generally higher in north and lower in south,but the specific distributionsof different pollutants were different. Conclusion Air pollution is still a critical issue in Ningbo. The concentrations of airpollutants in the north are generally higher than that in the south,and change with seasonal characteristics.
作者
柴鹏飞
郑文慧
CHAI Peng-fei;ZHENG Wen-hui(The Center for Disease Control and Prevention of Yinzhou District,Ningbo,Zhejiang 315100,China)
出处
《预防医学》
2018年第2期130-133,138,共5页
CHINA PREVENTIVE MEDICINE JOURNAL
基金
鄞州区2015年度第二批农社类科技项目(25)
关键词
空气污染物
时间分布
空间分布
Air pollutants
Temporal distribution
Spatial distribution
