Development of a Home-Made Long Path Absorption Photometer for the Sensitive Detection of Nitrous Acid
文献类型：期刊论文
| 作者 | Chen Lin1,2; Hou Si-Qi1; Wang Wei-Gang1; Tong Sheng-Rui1; Pei Ke-Mei2; Ge Mao-Fa1 |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 30期号:8页码:1408-1415 |
| 关键词 | Atmospheric Chemistry Long Path Absorption Photometer Nitrous Acid No2 Interference Field Observation |
| ISSN号 | 1000-6818 |
| DOI | 10.3866/PKU.WHXB201406032 |
| 英文摘要 | Nitrous acid (HONO) is an important trace gas in tropospheric photochemistry, which plays a significant role in polluted urban atmosphere. Based on the measuring principle, a long path absorption photometer (LOPAP) for the detection of nitrous acid was built in-house, which uses wet chemical sampling and photometric detection. This instrument aims to overcome the known problems with current HONO measurement techniques and was designed to be a cheap, sensitive, compact, and continuously working HONO monitor for ambient air measurements in the troposphere, or for measurements of higher concentration, e.g., in a smog chamber and in exhaust gases. The system includes two channels, by subtracting the signal of the second channel from the first channel the occurrence of possible unknown interferences can be minimized. The instrument has a detection limit of 9x10(-12) mol.mol(-1) and an accuracy of 10% at 5 min resolution, with a good linear relationship exhibited. In addition, we tested probable interferences from NO, NO2, O-3, NO2+O-3, NO2+SO2, and O-3+HONO. It was found that there were interference signals only when NO2 existed (value about 0.02%). With the instrument, 6 days of field observation was performed at the Institute of Chemistry, Chinese Academy of Sciences, Beijing, from 29 August to 4 September, 2013. During the observation we analyzed the diurnal variation of the HONO concentration and the correlation between the HONO concentration and solar radiation intensity, and the concentrations of NOx and NO2. Results from the ratio of HONO/NO2 indicate unknown HONO sources, except for the heterogeneous reaction of NO2. |
| 语种 | 英语 |
| WOS记录号 | WOS:000340232900002 |
| 出版者 | PEKING UNIV PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/51667]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ge Mao-Fa |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China 2.Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Lin,Hou Si-Qi,Wang Wei-Gang,et al. Development of a Home-Made Long Path Absorption Photometer for the Sensitive Detection of Nitrous Acid[J]. ACTA PHYSICO-CHIMICA SINICA,2014,30(8):1408-1415. |
| APA | Chen Lin,Hou Si-Qi,Wang Wei-Gang,Tong Sheng-Rui,Pei Ke-Mei,&Ge Mao-Fa.(2014).Development of a Home-Made Long Path Absorption Photometer for the Sensitive Detection of Nitrous Acid.ACTA PHYSICO-CHIMICA SINICA,30(8),1408-1415. |
| MLA | Chen Lin,et al."Development of a Home-Made Long Path Absorption Photometer for the Sensitive Detection of Nitrous Acid".ACTA PHYSICO-CHIMICA SINICA 30.8(2014):1408-1415. |
入库方式： OAI收割
来源：化学研究所
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