Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jece.2020.104392 |
Daytime measurements of bioaerosol simulants using a hyperspectral laser-induced fluorescence LIDAR for biosphere research | |
Shoshanim, Ofir; Baratz, Adva | |
通讯作者 | Shoshanim, O |
来源期刊 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
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EISSN | 2213-3437 |
出版年 | 2020 |
卷号 | 8期号:5 |
英文摘要 | A new compact home-built hyper-spectral laser-induced fluorescence (LIF) light detection and ranging (LIDAR) system is presented that can detect and identify bioaerosol clouds in an open atmosphere in daylight up to a distance of 3-4 km. The system is based on a 266 nm laser source and a dual-stage micro-channel plate intensified charge-coupled device sensor, which provides a high-resolution fluorescence spectrum with the sensitivity of a single photon counting imaging detection at a 10 Hz repetition rate. Controlled remote sensing experiments on biological simulants in the aerosol-phase within an enclosed chamber (Delta R = 1.2 m) were conducted from a short distance of similar to 170 m. A meticulous comparison between the remote fluorescence signal detected by the system and the instantaneous concentration and particle size distribution of the bioaerosol inside the chamber detected by an aerodynamic particle sizer yielded a threshold of similar to 20 and 137 mu gr s m(-3) for the spectral identification of tryptophan and ovalbumin, respectively. This showed that the LIDAR can measure environmental airborne biological aerosol remotely in the daytime and can be utilized as a real-time biosphere research tool. Next, the system was tested in open atmospheric field campaigns in the Israeli desert during the day. It successfully detected bioaerosol clouds at up to 2.5 km in strong wind and sunny conditions. These empirical detection and identification results provide robust estimates that a biological cloud can be sensed at a distance of similar to 4 km. |
英文关键词 | Bioaerosol Field campaign Laser-induced fluorescence (LIF) Light detection and ranging (LIDAR) Spectral angle mapping (SAM) analysis Photon counting |
类型 | Article |
语种 | 英语 |
收录类别 | SCI-E |
WOS记录号 | WOS:000575533200010 |
WOS关键词 | SIZE DISTRIBUTION ; AEROSOL-PARTICLES ; RESOLUTION ; SPECTRA |
WOS类目 | Engineering, Environmental ; Engineering, Chemical |
WOS研究方向 | Engineering |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/326643 |
作者单位 | [Shoshanim, Ofir] Israel Inst Biol Res IIBR, Dept Environm Phys, POB 19, IL-7410001 Ness Ziona, Israel; [Baratz, Adva] Israel Inst Biol Res IIBR, Dept Analyt Chem, POB 19, IL-7410001 Ness Ziona, Israel |
推荐引用方式 GB/T 7714 | Shoshanim, Ofir,Baratz, Adva. Daytime measurements of bioaerosol simulants using a hyperspectral laser-induced fluorescence LIDAR for biosphere research[J],2020,8(5). |
APA | Shoshanim, Ofir,&Baratz, Adva.(2020).Daytime measurements of bioaerosol simulants using a hyperspectral laser-induced fluorescence LIDAR for biosphere research.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,8(5). |
MLA | Shoshanim, Ofir,et al."Daytime measurements of bioaerosol simulants using a hyperspectral laser-induced fluorescence LIDAR for biosphere research".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 8.5(2020). |
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