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| 万州城区夏季、冬季PM_(2.5)中有机碳和元素碳的浓度特征 | |
| 引用本文： | 彭超,翟崇治,王欢博,田密,李红丽,刘源,付川,张六一,杨复沫.万州城区夏季、冬季PM_(2.5)中有机碳和元素碳的浓度特征[J].环境科学学报,2015,35(6):1638-1644. |
| 作者姓名： | 彭超 翟崇治 王欢博 田密 李红丽 刘源 付川 张六一 杨复沫 |
| 作者单位： | 1. 中国科学院重庆绿色智能技术研究院,水库水环境重点实验室,重庆400714;重庆工商大学,重庆400067 2. 重庆市环境监测中心,城市大气环境综合观测与污染防控重庆市重点实验室,重庆401147 3. 中国科学院重庆绿色智能技术研究院,水库水环境重点实验室,重庆400714 4. 重庆三峡学院,三峡库区水环境演变与污染防治重点实验室,万州404100 |
| 基金项目： | 国家自然科学基金面上项目(No.41375123);重庆市科学技术委员会项目(No.cstc2014yykfC20003);中国科学院重点部署项目(No.KJZD-EW-TZ-G06-04);国家环境保护大气复合污染来源与控制重点实验室开放基金(No.SCAPC201310);中国科学院西部行动计划项目(No.KZCX2-XB3-14) |
| 摘 要： | 在位于三峡库区腹心的山地城市万州城区采集夏季和冬季PM2.5样品,采用热光反射法(Thermal Optical Reflection,TOR)测定了PM2.5中有机碳(OC)和元素碳(EC)的浓度,探讨了其污染特征及来源.结果发现,OC和EC在夏季的平均浓度分别为(7.09±1.86)μg·m-3和(3.49±0.64)μg·m-3;冬季分别为(16.82±6.87)μg·m-3和(6.21±2.06)μg·m-3,高于夏季,这可能与冬季当地居民生物质燃烧的贡献显著增加有关.冬季OC和EC显著线性相关(r=0.89),表明冬季两者的一次污染来源相近.冬季PM2.5中总碳(TC)和水溶性K+含量的相关性(r=0.88)高于夏季(r=0.69),表明冬季生物质燃烧对碳污染贡献显著.利用OC/EC比值法对二次有机碳(SOC)进行估算,SOC的浓度均值在夏季为(2.17±1.46)μg·m-3,占OC比例为28.18%±13.85%;冬季为(4.46±3.69)μg·m-3,占OC的23.13%±12.30%.通过计算PM2.5中8个碳组分丰度,初步判断机动车尾气排放和生物质燃烧是万州城区碳组分的主要来源. |
| 关 键 词： | PM2.5 有机碳 元素碳 生物质燃烧 三峡库区 |
| 收稿时间： | 8/3/2014 12:00:00 AM |
| 修稿时间： | 2014/10/14 0:00:00 |
Characteristics of organic carbon and elemental carbon in PM2.5 in the urban Wanzhou area in summer and winter |
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| PENG Chao,ZHAI Chongzhi,WANG Huanbo,TIAN Mi,LI Hongli,LIU Yuan,FU Chuan,ZHANG Liuyi and YANG Fumo.Characteristics of organic carbon and elemental carbon in PM2.5 in the urban Wanzhou area in summer and winter[J].Acta Scientiae Circumstantiae,2015,35(6):1638-1644. | |
| Authors: | PENG Chao ZHAI Chongzhi WANG Huanbo TIAN Mi LI Hongli LIU Yuan FU Chuan ZHANG Liuyi and YANG Fumo |
| Institution: | 1. Chongqing Institutes of Green and Intelligent Technology, Chinese Academy of Sciences, Key Laboratory of Reservoir Aquatic Environment, Chongqing 400714;2. Chongqing Technology and Business University, Chongqing 400067,Chongqing Environmental Monitor Center, Chongqing Key Laboratory of Urban Atmospheric Environment Integrated Observation & Pollution Prevention and Control, Chongqing 401147,Chongqing Institutes of Green and Intelligent Technology, Chinese Academy of Sciences, Key Laboratory of Reservoir Aquatic Environment, Chongqing 400714,Chongqing Institutes of Green and Intelligent Technology, Chinese Academy of Sciences, Key Laboratory of Reservoir Aquatic Environment, Chongqing 400714,Chongqing Institutes of Green and Intelligent Technology, Chinese Academy of Sciences, Key Laboratory of Reservoir Aquatic Environment, Chongqing 400714,Chongqing Institutes of Green and Intelligent Technology, Chinese Academy of Sciences, Key Laboratory of Reservoir Aquatic Environment, Chongqing 400714,Chongqing Three Gorges University, Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Wanzhou 404100,Chongqing Three Gorges University, Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Wanzhou 404100 and Chongqing Institutes of Green and Intelligent Technology, Chinese Academy of Sciences, Key Laboratory of Reservoir Aquatic Environment, Chongqing 400714 |
| Abstract: | |
| Keywords: | PM2 5 organic carbon (OC) elemental carbon (EC) biomass burning Three Gorges Reservoir |
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