Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example
文献类型：期刊论文
| 作者 | Li, Zhengang1,2; Si, Ganshang1,2; Ning, Zhiqiang1,2; Liu, Jiaxiang2 ; Fang, Yonghua1,2; Si, Beibei1,2; Cheng, Zhen1,2; Yang, Changping1,2
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| 刊名 | SENSORS
 |
| 出版日期 | 2022 |
| 卷号 | 22 |
| 关键词 | photoacoustic spectroscopy photoacoustic cell long optical path acoustic resonance resonance mode finite element simulation |
| DOI | 10.3390/s22010281 |
| 通讯作者 | Fang, Yonghua(yhfang@aiofm.ac.cn) |
| 英文摘要 | The concentration of trace gases in the atmospheric environment is extremely low, but it has a great impact on the living environment of organisms. Photoacoustic spectroscopy has attracted extensive attention in the field of trace gas detection because of its high sensitivity, good selectivity, and fast response. As the core of a photoacoustic detection setup, the photoacoustic cell has a significant impact on detection performance. To improve detection sensitivity, a sphere-tube coupled photoacoustic cell (STPAC) was developed, which was mainly composed of a diffuse-reflective sphere and an acoustic resonance tube. Modulated light was reflected multiple times in the sphere to increase optical path, and photoacoustic (PA) signals were further amplified by the tube. Based on STPAC, a PA gas detection setup was built with a laser diode (LD) at 450 nm as the light source. The experimental results showed that the minimum detection limit (noise equivalent concentration, NEC) of NO2 was ~0.7 parts per billion (ppb). Compared with the T-type PA cell (TPAC) in which the modulated light passed through the sphere, the signal-to-noise ratio of STPAC was increased by an order of magnitude at the same concentration of the NO2 sample. |
| WOS关键词 | PHOTOTHERMAL SPECTROSCOPY ; MULTIPLE REFLECTIONS ; INTEGRATING SPHERE ; LASER EXCITATION ; SENSOR ; ABSORPTION ; SPECTROMETER ; TEMPERATURE ; RESONATORS |
| WOS研究方向 | Chemistry ; Engineering ; Instruments & Instrumentation |
| 语种 | 英语 |
| WOS记录号 | WOS:000743118500001 |
| 出版者 | MDPI |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/127131]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Fang, Yonghua |
| 作者单位 | 1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhengang,Si, Ganshang,Ning, Zhiqiang,et al. Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example[J]. SENSORS,2022,22. |
| APA | Li, Zhengang.,Si, Ganshang.,Ning, Zhiqiang.,Liu, Jiaxiang.,Fang, Yonghua.,...&Yang, Changping.(2022).Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example.SENSORS,22. |
| MLA | Li, Zhengang,et al."Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example".SENSORS 22(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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