Development of a Real-Time,In-SituParticle Sizing Technique: Real-Time Light Transmission Spectroscopy (RTLTS)
| Autor: | Soonho Song, Sungsoo Park, Jaehyuk Yoon, Kwang Min Chun |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Aerosol Science and Technology. 47:1092-1100 |
| ISSN: | 1521-7388 0278-6826 |
| DOI: | 10.1080/02786826.2013.824551 |
| Popis: | We developed an improved particle measurement spectroscopic technique, real-time laser transmission spectroscopy (RTLTS), to detect the number-weighted distribution of particles in real time. The measurement system used a deuterium–tungsten lamp for the light source and a spectrometer as the detector. The operating wavelength range was 300–810 nm. To obtain a physically reasonable number concentration from the experimental results, a sequential regularization method was used during the calculations. To verify the feasibility and reliability of RTLTS, the number-weighted distribution of polystyrene particle suspensions was determined over diameters ranging from 0.005 to 2.000 μm in 0.005-μm increments. The measured concentration error was 0.67–32.67%. A mean diameter of the smallest particle we had detected was 0.09 μm, with a 16% oversizing. The measurable concentration range was ∼108 #/cc to ∼1011 #/cc for 0.895-μm-diameter particles. The measurable concentration range could be adjusted simply by changin... |
| Databáze: | OpenAIRE |
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