| The Annual Characteristics of Rainwater HCHO in Guiyang City, Southwest of China | |
Xu Gang2,4 ; Shao HongBo1,2,3; Lee XinQing4; Lv YingChun2
| |
| 发表期刊 | CLEAN-SOIL AIR WATER
 |
| ISSN | 1863-0650 |
| 2010-08-01 | |
| 卷号 | 38期号:8页码:726-731 |
| 关键词 | Air Mass Back-trajectory Hcho Dry Deposition Wet Deposition |
| 产权排序 | [Shao HongBo] QUST, Inst Life Sci, Qingdao 266042, Peoples R China; [Xu Gang; Shao HongBo; Lv YingChun] Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc, Shandong Prov Key Lab, Yantai, Peoples R China; [Shao HongBo] Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Peoples R China; [Xu Gang; Lee XinQing] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China |
| 通讯作者 | Shao, HB, QUST, Inst Life Sci, Qingdao 266042, Peoples R China |
| 作者部门 | 滨海湿地实验室 |
| 英文摘要 | HCHO is ubiquitous and important chemical constitutes in the troposphere. The concentrations of the HCHO (aq) in the rainwater were measured in the Guiyang city, southeastern of China from May 2006 to April 2007 and 153 discrete samples were collected. Rainwater (N - 151) HCHO (aq) concentrations ranged from lower than method detection limit (MDL) to 40.2 mu mol/L with a volume weighted mean value of 7.4 +/- 8.8 mu mol/L. The strong correlations between HCHO (aq) and HCOO- (r = 0.69, n = 137), HCHO (aq) and nss-SO42- (r = 0.74, n = 137), HCHO (aq) and NO3- (r = 0.67, n = 137), HCHO (aq) and NH4+ (r = 0.74, n = 133) suggest the significant influence of the anthropogenic input for the HCHO (aq) levels. The concentration levels of rainwater HCHO (aq) was inversely proportional to the amount of rainfall, indicating the below-cloud process is the most important mechanism for rainwater HCHO (aq) scavenging processes. More than 70% of the HCHO (aq) wet deposition took place during the early stage of the rainfall. According to the air mass back-trajectory analysis, the rainwater with industrial back-trajectories coming from the north had the highest levels of HCHO (aq) while the rainwater with the green-covered or marine back-trajectories from the southeast had the lowest concentrations, and this indicate the HCHO (aq) originated from urban or industrial regions served as an important source of the rainwater. The annual HCHO (aq) wet deposition flux was calculated as 6.96 mmol/m(2) per year and the total deposition flux was estimated as 24.35 mmol/m(2) per year, 71.4% of which was dominated by dry deposition.; HCHO is ubiquitous and important chemical constitutes in the troposphere. The concentrations of the HCHO (aq) in the rainwater were measured in the Guiyang city, southeastern of China from May 2006 to April 2007 and 153 discrete samples were collected. Rainwater (N - 151) HCHO (aq) concentrations ranged from lower than method detection limit (MDL) to 40.2 mu mol/L with a volume weighted mean value of 7.4 +/- 8.8 mu mol/L. The strong correlations between HCHO (aq) and HCOO(-) (r = 0.69, n = 137), HCHO (aq) and nss-SO(4)(2-) (r = 0.74, n = 137), HCHO (aq) and NO(3)(-) (r = 0.67, n = 137), HCHO (aq) and NH(4)(+) (r = 0.74, n = 133) suggest the significant influence of the anthropogenic input for the HCHO (aq) levels. The concentration levels of rainwater HCHO (aq) was inversely proportional to the amount of rainfall, indicating the below-cloud process is the most important mechanism for rainwater HCHO (aq) scavenging processes. More than 70% of the HCHO (aq) wet deposition took place during the early stage of the rainfall. According to the air mass back-trajectory analysis, the rainwater with industrial back-trajectories coming from the north had the highest levels of HCHO (aq) while the rainwater with the green-covered or marine back-trajectories from the southeast had the lowest concentrations, and this indicate the HCHO (aq) originated from urban or industrial regions served as an important source of the rainwater. The annual HCHO (aq) wet deposition flux was calculated as 6.96 mmol/m(2) per year and the total deposition flux was estimated as 24.35 mmol/m(2) per year, 71.4% of which was dominated by dry deposition. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China [40573048]; Chinese Academy of Sciences (CAS) [KZCX2-YW-JC203, 2009Y2B211]; CAS-local Government ; CAS/SAFEA |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | CARBOXYLIC-ACIDS ; ORGANIC-ACIDS ; FORMIC-ACID ; FORMALDEHYDE ; AIR ; DEPOSITION ; CHEMISTRY ; ALDEHYDES ; CLOUDS ; URBAN |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| WOS记录号 | WOS:000282259900005 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/3699 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_滨海湿地实验室 |
| 作者单位 | 1.QUST, Inst Life Sci, Qingdao 266042, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc, Shandong Prov Key Lab, Yantai, Peoples R China 3.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Peoples R China 4.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu Gang,Shao HongBo,Lee XinQing,et al. The Annual Characteristics of Rainwater HCHO in Guiyang City, Southwest of China[J]. CLEAN-SOIL AIR WATER,2010,38(8):726-731. |
| APA | Xu Gang,Shao HongBo,Lee XinQing,&Lv YingChun.(2010).The Annual Characteristics of Rainwater HCHO in Guiyang City, Southwest of China.CLEAN-SOIL AIR WATER,38(8),726-731. |
| MLA | Xu Gang,et al."The Annual Characteristics of Rainwater HCHO in Guiyang City, Southwest of China".CLEAN-SOIL AIR WATER 38.8(2010):726-731. |
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