北京秋冬季有机碳和元素碳(黑碳)测试结果的细节研究
文献类型：期刊论文
| 作者 | 张娅蕴; 支国瑞; 田崇国 ; 李术元; 孙建中; 张宇哲; 杨婷
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| 刊名 | 环境科学研究
 |
| 出版日期 | 2017-08-15 |
| 卷号 | 30期号:8页码:1184-1192 |
| 关键词 | OC EC BC thermal/optical analysis optical analysis 有机碳 元素碳 黑碳 热光法 光学法 |
| ISSN号 | 1001-6929 |
| DOI | DOI:10.13198j.issn.1001-6929.2017.02.56 |
| 其他题名 | Study of the Details of Aerosol Carbon Measurements in Autumn and Winter in Beijing |
| 产权排序 | (1) 中国环境科学研究院环境基准与风险评估国家重点实验室 ; (2) 中国石油大学(北京)理学院 ; (3) 中国科学院烟台海岸带研究所 ; (4) 吉林大学地球科学学院 |
| 文献子类 | Article |
| 英文摘要 | Quantitative studies on carbonaceous aerosols are based on individual bulk values of organic carbon (OC) and elemental carbon (EC) or black carbon (BC),yet few cases of in-depth interpretation of the minutiae of the measurement results are available,making full understanding and application of the information involved in instrument analysis results difficult. In October 2015 (autumn) and January 2016 (winter),rho (OC) and rho (EC) in PM_(2. 5) of Beijing were measured using the thermal/optical IMPROVE_A protocol (model 2001A), and meantime rho (BC) was measured using the optical aethalometer method (AE31). The results showed that: (1) The rho (OC) and rho (EC) in autumn were 8. 59 and 3. 89 mug/m~3,respectively, and those in winter were 16. 45 and 6. 19 mug/m~3,respectively. The values in winter were significantly higher than those in autumn. (2) The average value of rho (OC_1 ) /rho (OC) ratio in autumn samples analyzed by thermal/optical method was 0. 08 0. 04,and in winter samples,the ratio rose to 0. 22 0. 05,which may be a result of higher emissions of volatile organic compounds (VOCs) and subsequent condensation in lower ambient temperatures in winter. (3) Regarding the determination results of the 7-wavelength aethalometer,the ratio of BC equivalent measured at 370 nm (rho (BC370 ) ) to the standard BC measured at 880 nm (rho (BC880) ),i. e.,rho (BC370) /rho (BC880),was 1. 05 0. 11 in autumn,indicative of weak optical absorption by brown carbon (BrC) in that season,but jumped to 1. 47 0. 11 in winter,40% higher than that of autumn. (4) The variation trends of rho (BC) /rho (EC) and rho (PM_(2. 5) ) were very similar,implying an increased chance of core-shell internal mixing and a consequent enhancement of EC's mass absorption efficiency (MAE). rho (BC) values reported by the aethalometer were thus magnified,leading to a bigger rho (BC) /rho (EC) ratio. However,further investigation showed that the increase reached a'platform'when rho (PM_(2. 5) ) reached 50-70 mug/m~3,with an'autumn platform value'at around 1. 05 and a'winter platform value'at around 0. 55. It could be seen that the measurement results of the instruments contain a large amount of information,some of which has usually been ignored in routine practice. The in-depth interpretation of the details of the information helps better understand the comprehensive characteristics of carbonaceous aerosols. |
| WOS关键词 | Environmental Sciences & Ecology |
| WOS研究方向 | Environmental Sciences & Ecology ; 环境科学与生态学 |
| 语种 | 中文 |
| CSCD记录号 | CSCD:6056125 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/24246]  |
| 专题 | 烟台海岸带研究所_近岸生态与环境实验室 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.吉林大学地球科学学院 2.中国石油大学(北京)理学院; 3.中国环境科学研究院环境基准与风险评估国家重点实验室; 4.中国科学院烟台海岸带研究所; |
| 推荐引用方式 GB/T 7714 | 张娅蕴,支国瑞,田崇国,等. 北京秋冬季有机碳和元素碳(黑碳)测试结果的细节研究[J]. 环境科学研究,2017,30(8):1184-1192. |
| APA | 张娅蕴.,支国瑞.,田崇国.,李术元.,孙建中.,...&杨婷.(2017).北京秋冬季有机碳和元素碳(黑碳)测试结果的细节研究.环境科学研究,30(8),1184-1192. |
| MLA | 张娅蕴,et al."北京秋冬季有机碳和元素碳(黑碳)测试结果的细节研究".环境科学研究 30.8(2017):1184-1192. |
入库方式： OAI收割
来源：烟台海岸带研究所
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