| Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization | |
Xu, Gang1,2 ; Lee, Xinqing2; Lv, Yingchun1
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| 发表期刊 | JOURNAL OF ATMOSPHERIC CHEMISTRY
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| ISSN | 0167-7764 |
| 2009-04-01 | |
| 卷号 | 62期号:3页码:249-260 |
| 关键词 | Carboxylic Acids Formic Acid Acetic Acid Rainwater |
| 产权排序 | Chinese Acad Sci, Yantai Inst Coastal Zone Res;Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem |
| 通讯作者 | Lv, YC, Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 作者部门 | 污染过程与控制实验室 |
| 英文摘要 | Seven carboxylic acids in rainwater were simultaneously determined using ion chromatography for 13 months in two different sites, Guiyang and Shangzhong, southwest of China. Results showed formic, acetic and oxalic acids were the three predominant carboxylic acids. Their volume-weighted average concentrations were 14.24, 9.35, 2.79 mu mol/L in Guiyang and 4.95, 1.35, 2.31 mu mol/L in Shangzhong, respectively. A distinctive diurnal pattern in carboxylic acid concentrations (daytime > nighttime, t test, p < 0.05) was observed during the growing season in Guiyang. Shangzhong witnessed higher concentration of these acids during the growing season than that during the non-growing season. Direct emissions from growing vegetation or soils probably account for the main provenance of the acids in the rural area. However, the opposite trend were found in Guiyang and the anthropogenic sources during the non-growing season were the main reason. By comparison of our result with the previous data about 20 years ago, we calculated that at least 42% of acetic acids and 69% of formic acid originated from the anthropogenic sources in Guiyang. Furthermore, the ratio of formate/acetate in gas phase larger than 1 suggest the oxidation of unsaturated hydrocarbons from the human activity and/or natural sources were the main origin of carboxylic acids in Guiyang. While The F/A ratio in gas phase was less than 1 in Shangzhong which indicate the direct emissions from biogenic sources. Oxalic acid was in similar amounts in both sites, indicating the common source of the acid. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China [40573048] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | WEIGHT ORGANIC-ACIDS ; ACETIC-ACIDS ; FORMIC-ACID ; ATMOSPHERIC CHEMISTRY ; SITE ; DEPOSITION ; NORTH ; WATER ; ALDEHYDES ; INDIA |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000276185400005 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/3548 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 2.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Gang,Lee, Xinqing,Lv, Yingchun. Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization[J]. JOURNAL OF ATMOSPHERIC CHEMISTRY,2009,62(3):249-260. |
| APA | Xu, Gang,Lee, Xinqing,&Lv, Yingchun.(2009).Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization.JOURNAL OF ATMOSPHERIC CHEMISTRY,62(3),249-260. |
| MLA | Xu, Gang,et al."Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization".JOURNAL OF ATMOSPHERIC CHEMISTRY 62.3(2009):249-260. |
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