| 摘要: |
| 为了解石家庄市大气颗粒物中有机碳和元素碳的季节变化特征，对春、夏、秋、冬四季采集的PM10、PM2.5样品中的有机碳（ OC） 和元素碳（ EC） 进行了分析。结果表明，石家庄市PM10、PM2.5污染严重；PM10、PM2.5中ρ（OC）和ρ（EC）季节变化特征均为夏季＜春季＜秋季＜冬季。冬季PM10中ρ（OC）和ρ（EC）分别为42.85和8.88μg/m3； PM2.5中ρ（OC）和ρ（EC）分别为41.2和8.59μg/m3。PM2.5中EC占比最高为3.9%，EC更容易在PM2.5中富集；在四个季节中，冬季PM10、PM2.5中ρ（OC）/ρ（EC）为最高，分别为4.83和4.80，冬季取暖用燃煤加重了OC、EC的污染。冬季PM10中二次有机碳ρ（SOC）为20.92μg/m3，PM2.5中ρ（SOC）为23.50μg/m3。 |
| 关键词: 石家庄 可吸收颗粒物 可入肺颗粒物 有机碳 元素碳 污染特征 |
| DOI： |
| 分类号:X83 |
| 文献标识码:B |
| 基金项目:河北省科技计划基金资助项目（13273702D） |
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| Seasonal Variation of Organic Carbon and Elemental Carbon in Atmospheric Particles in Shijiazhuang |
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JIANG Jianbiao， CHANG Qing，FENG Yuan，LUO Yi，LI Zhiguo
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Shijiazhuang Environmental Monitoring Center， Shijiazhuang，Hebei 050022，China
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| Abstract: |
| In order to find out the seasonal variation characteristics of organic carbon （OC） and elemental carbon （EC） in atmospheric particulate matter in Shijiazhuang， the PM10 and PM2.5 samples were collected and analyzed. The results show that the PM10and PM2.5 pollution is serious in Shijiazhuang. The seasonal variation characteristics of OC and EC in PM10 and PM2.5bothranked in the order of summer10 in winter was 42.85 and 8.88μg/m3，respectively， while in PM2.5， 41.2 and 8.59μg/m3， respectively. EC accounted for 3.9% at most in PM2.5， which showed that EC is apt to be concentrated in PM2.5. In winter， the value of ρ（OC）/ρ（EC） in PM10 and PM2.5both reached to the highest，4.83 and 4.80 respectively. The fire coal for heating in winter increased pollution of OC and EC. In winter， the concentration of SOC in PM10 was 20.92μg/m3， and the concentration of SOC in PM2.5 was 23.50μg/m3. |
| Key words: Shijiazhang PM10 PM2.5 OC EC Pollution characteristic |
