摘要
为了解南京城区大气细颗粒物中有机碳与元素碳的污染特征,在国控点草场门进行了连续一年的PM2.5采样,分析了有机碳(OC)、元素碳(EC)、ρ(OC)/ρ(EC)污染特征和变化规律。结果表明,采样期间有些PM2.5的日均值超过了《环境空气质量标准》(GB 3095-2012)二级标准,ρ(OC)/ρ(EC)为0.77～4.98,平均值为1.92。PM2.5样品中OC约占18%、EC约占9%。
In order to find out organic and element carbon pollution characteristics in atmospheric fine particles in Nanjing, sampling and detection of PM/.5 were performed in one year for the concentration of organic carbon （OC）, element carbon （EC） , ρ （OC） / ρ （EC） as well as their change rules. The results showed that ρ（OC）/ρ（EC） ranged from 0.77 to 4.98, average value 1.92. The OC accounted for 18% in PM25 sample, and EC 9%. Daily average concentration of PM25 during the sampling time had been over the Level-2 standard in the Ambient Air Quality Standard （GB 3095 -2012） to indicate that carbon pollution of PM2.5 in Nanjing was relatively serious.
出处
《环境监测管理与技术》
2012年第4期30-32,共3页
The Administration and Technique of Environmental Monitoring
基金
江苏省环保科研计划基金资助项目(2008006)
南京市环保局科研基金资助项目(200804)
关键词
可入肺颗粒物
有机碳
元素碳
污染特征
南京
PM2.5
Organic carbon
Element carbon
Pollution characteristics
Nanjing
