帮助 关于我们

返回检索结果

华北典型城市PM_(2.5)中碳质气溶胶的季节变化与组成特征
Characterization and Seasonal Variation of Carbonaceous Aerosol in Urban Atmosphere of A Typical City in North China

查看参考文献22篇

申铠君 1   张向云 1   刘頔 1   耿晓飞 1   孙剑辉 2   李军 1 *   张干 1  
文摘 2013年10月至2014年9月,在华北典型城市--河南新乡市市区采集4个季节大气PM_(2.5)样品,每个季节连续采样1个月,共获得样品124个。用热-光透射法(TOT)分析了PM_(2.5)中的碳质气溶胶组成,并用核磁共振(13C-NMR)的方法测定了碳组分结构。采样期间PM_(2.5)、OC和EC的日平均质量浓度分别为(238±123)、(28.5±20.5)和(5.08±4.46) μg?m~(-3)。其中4个季节的TC与PM_(2.5)质量浓度高度相关,显示碳质气溶胶是新乡PM_(2.5)的重要组分,其季节平均质量浓度大小顺序为:冬季>秋季>春季>夏季。OC/EC比值在2.78~16.20之间,平均值为6.33,说明新乡碳质气溶胶来源具有多样性。不同季节OC/EC比值的变化范围也有不同,其中春季变化范围最小,说明污染源相对比较稳定;冬季变化范围最大,最低值为2.78,最高值为16.2,显示了生物质燃烧贡献的重要性。核磁共振结果显示新乡市碳质组分的主要成分为烷基碳、羟基碳、烷基取代的芳香碳和芳烃或者酚醛树脂类碳。秋季羧酸类碳和氧取代芳烃或者酚醛树脂类碳明显增加,显示了生物质燃烧对城市秋季大气碳质气溶胶贡献的重要性;冬季羟基化合物增加主要来源于室内生物质燃烧;春季芳香类化合物增加,可能为汽车尾气排放源;夏季烷烃类碳明显增加,与植物生长和气候有关。
其他语种文摘 PM_(2.5) were measured during October, 2013 to September, 2104 from Xinxiang city, China through continuous sampling campaign by collecting 124 samples of fine particulate matters. Carbonaceous components were quantified by thermal/optical transmission (TOT) method while compound composition was analyzed by solid-state nuclear magnetic resonance (13C-NMR) spectroscopy. Results for the mass concentration of PM_(2.5), OC and EC were found (238±123), (28.5±20.5) and (5.08±4.46) μg?m~(-3), respectively which revealed a significant correlation between PM_(2.5) and TC (TC=OC+EC), and indicated prime role of carbonaceous aerosol on the formation of fine particles. The highest concentrations of PM_(2.5), OC and EC were observed in winter followed by autumn and spring while lowest concentrations were observed in summer. OC/EC ratio (mean: 6.33) was found in range of 2.78~16.20, which indicated the diversity in source carbonaceous aerosol. Variation range for OC/EC ratio was observed lowest during spring season and reflected a relatively stable pollution source, on the other hand maximum variation range of OC/EC was observed in winter (2.78~16.2) which indicated the role of biomass burning as pollution source. Results of 13C-NMR showed that organic in Xinxiang atmospheric aerosol particles is mainly composed of alkyl, Hydroxyl, alkyl-substituted aromatic and oxygen-substituted aromatic or phenolic functional groups. Increased carboxylic or oxygen-substituted aromatic or phenolic and hydroxyl functional group indicated the straw combustion in autumn and domestic fireplace biomass burning in winter, respectively. Aromatic compounds were found higher in spring season, which mainly from vehicle emission while increased alkyl compounds in summer season perhaps due to the weather and plant growth.
来源 生态环境学报 ,2016,25(3):458-463 【核心库】
DOI 10.16258/j.cnki.1674-5906.2016.03.013
关键词 华北 ; PM_(2.5) ; 碳质气溶胶 ; 核磁共振 ; OC EC ; 季节变化
地址

1. 中国科学院广州地球化学研究所, 有机地球化学国家重点实验室, 广东, 广州, 510640  

2. 河南师范大学, 河南, 新乡, 453000

语种 中文
文献类型 研究性论文
ISSN 1674-5906
学科 环境科学基础理论
基金 广州市科学研究专项重点项目
文献收藏号 CSCD:5703878

参考文献 共 22 共2页

1.  Andreae M O. Emission of trace gases and aerosols from biomass burning. Global Biogeochemical Cycles,2001,15(4):955-966 被引 156    
2.  Chen Y J. Measurement of emission factors for primary carbonaceous particles from residential raw-coal combustion in China. Geophysical Research Letter,2006,33(20):L20815 被引 44    
3.  Chow Judith C. Descriptive analysis of PM_(2.5) and PM_(10) at regionally representative locations during SJVAQS/AUSPEX. Atmospheric Environment,1996,30(12):2079-2112 被引 1    
4.  Dockery D W. Acute respiratory effects of particulate air pollution. Annual Revision Public Health,1994,15(1):107-132 被引 81    
5.  Pandis S N. Secondary organic aerosol formation and transport. Atmospheric Environment. Part A. General Topics,1992,26(13):2269-2282 被引 39    
6.  Pouloim Sannigrahi. Characterization of water-soluble organic carbon in urban atmospheric aerosols using solid-state C-13 NMR spectroscopy. Environmental Science and Technology,2006,40(3):666-672 被引 3    
7.  Ram K. Atmospheric abundances of primary and secondary carbonaceous species at two high-altitude sites in India: Sources and temporal variability. Atmospheric Environment,2008,42(28):6785-6796 被引 5    
8.  Sandradewi J. A study of wood burning and traffic aerosols in an Alpine valley using a multi-wavelength Aethalometer. Atmospheric Environment,2008,42(1):101-112 被引 27    
9.  Schauer J J. Measurement of emission from air pollution sources 2 C1 through C30 organic compounds from medium duty diesel trucks. Environmental Science and Technology,1999,33(10):1578-1180 被引 93    
10.  Schauer J J. Measurement of emission from air pollution sources 3 C1-C29 organic compounds from fireplace combustion of wood. Environmental Science and Technology,2001,35(9):1716-1728 被引 69    
11.  Schauer J J. Measurement of emission from air pollution sources 5 C1-C32 organic compounds from gasoline-powered motor vehicle. Environmental Science and Technology,2002,36(6):1169-1587 被引 127    
12.  Sudheer A K. Carbonaceous aerosols in MABL of Bay of Bengal: Influence of continental outflow. Atmospheric Environment,2008,42(18):4089-4100 被引 8    
13.  Turpin B J. Identification of secondary organic aerosol episodes and quantification of primary and secondary organic aerosol concentrations during SCAQS. Atmospheric Environment,1995,29(23):3527-3544 被引 244    
14.  Turpin B J. Identification of secondary organic aerosol episodes and quantification of primary and secondary organic aerosol concentration during SCAQS. Atmospheric Environment,1995,12:1352-2310 被引 1    
15.  杜荣光. 杭州市PM_(2.5)中碳气溶胶污染特征. 环境化学,2013,32(12):2400-2401 被引 10    
16.  范慧君. 大连市环境空气中PM_(2.5)含碳组分浓度特征研究. 中国环境管理干部学院学报,2014,24(5):46-50 被引 2    
17.  黄虹. 广州大气细粒子中有机碳、元素碳和水溶性有机碳的分布特征. 分析科学学报,2010,26(3):255-260 被引 27    
18.  康苏花. 石家庄市春节期间大气颗粒物有机碳和元素碳的变化特征. 中国环境监测,2014,30(6):77-82 被引 12    
19.  钱婧. 西安市冬季重污染天PM_(2.5)高分辨率及其中碳气溶胶污染特征分析. 生态环境学报,2014,23(3):464-471 被引 8    
20.  王雁. 新乡市PM_(10)季节变化时空特征分析. 新乡学院学报:自然科学版,2011,28(3):263-265 被引 1    
引证文献 7

1 闫广轩 新乡市秋季大气细颗粒物PM_(2.5)中水溶性离子特征及其来源解析 环境科学学报,2018,38(2):640-648
被引 14

2 郭森 石家庄夏季道路尘有机碳和元素碳特征及来源 环境工程,2018,36(4):122-126
被引 4

显示所有7篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护:中国科学院文献情报中心
地址:北京中关村北四环西路33号 邮政编码:100190 联系电话:(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号