Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy
文献类型：期刊论文
| 作者 | F. Yuan,M. Hu,Y. B. He,B. Chen,L. Yao,Z. Y. Xu and R. F. Kan |
| 刊名 | Review of Scientific Instruments
 |
| 出版日期 | 2020 |
| 卷号 | 91期号:8页码:9 |
| ISSN号 | 0034-6748 |
| DOI | 10.1063/5.0004742 |
| 英文摘要 | This paper reports the development of a compact in situ real-time concentration analysis system for methane dissolved in seawater by using a continuous-wave cavity ringdown spectroscopy (CRDS) technique. The miniaturized design of the system, including optical resonance cavity and control and data acquisition-analysis electronics, has a cylindrical dimension of 550 mm in length and 100 mm in diameter. Ringdown signal generation, data acquisition and storage, current driver, and temperature controller of the diode laser are all integrated in the miniaturized system circuits, with an electrical power consumption of less than 12 W. Fitting algorithms of the ringdown signal and spectral line are implemented in a digital signal processor, which is the main control chip of the system circuit. The detection sensitivity for methane concentration can reach 0.4 ppbv with an approximate averaging time of 240 s (or 4 min). Comparing the system's measurement of ambient air against a high-quality commercial CRDS instrument has demonstrated a good agreement in results. In addition, as a "proof of concept" for measuring dissolved methane, the developed instrument was tested in an actual underwater environment. The results showed the potential of this miniaturized portable instrument for in situ gas sensing applications. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/64442]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | F. Yuan,M. Hu,Y. B. He,B. Chen,L. Yao,Z. Y. Xu and R. F. Kan. Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy[J]. Review of Scientific Instruments,2020,91(8):9. |
| APA | F. Yuan,M. Hu,Y. B. He,B. Chen,L. Yao,Z. Y. Xu and R. F. Kan.(2020).Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy.Review of Scientific Instruments,91(8),9. |
| MLA | F. Yuan,M. Hu,Y. B. He,B. Chen,L. Yao,Z. Y. Xu and R. F. Kan."Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy".Review of Scientific Instruments 91.8(2020):9. |
入库方式： OAI收割
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。