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《Chinese Journal of Enviromental Science》 2001-02
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Extinction Characteristics of TiO_2 Suspension for Different Band Ultraviolet Radiation

Meng Yaobin, Huang Xia, Qian Yi(State Key Joint Laboratory of Environment Simulation and Pollution Control,Dept. of Environ. Sci. & Eng., Tsinghua University, Beijing 100084, China E mail: mengyb@mail.cic. tsinghua .edu.cn)  
This study focused on the global absorption characteristics of UVA, UVB and UVC radiation in the suspension of titanium pollutant solution using 4 CBA Na as a model pollutant. The result showed that the attenuation of ultraviolet in the suspensions conformed to Beer's Law, light intensity negative exponentially attenuating with the optic path. The extinction coefficient increased with the titanium dosage by a quadratic polynomial law, which may be approximated by a linear function at lower dosage. The sum of the respective UVC or UVB extinction coefficient in pollutant solution and titanium\|water suspension was found to approach the measured value in Titanium\|Pollutant suspension. Larger extinction coefficient was observed for shorter UV wavelength, implying higher energy efficiency with UVC as ultraviolet source.
【Fund】: 中日合作项目
【CateGory Index】: X703.5
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