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DOI10.1016/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
EISSN2213-3437
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
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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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