基于近前向光散射法的气溶胶浓度测量

马英; 王龙江; 俞杰; 王坤俊; 尹王保; 董磊

doi:doi:10.3788/lop54.092901

激光与光电子学进展, 2017, 54 (9): 092901, 网络出版: 2017-09-06

基于近前向光散射法的气溶胶浓度测量下载： 510次

Aerosol Concentration Measurement Based on Near-Forward Light Scattering Method

论文大纲

马英 ^1,*王龙江 ¹俞杰 ¹王坤俊 ¹尹王保 ^2,3董磊 ^2,3

作者单位

¹ 中国辐射防护研究院环境工程技术研究所, 山西太原 030006

² 山西大学激光光谱研究所量子光学与光量子器件国家重点实验室, 山西太原 030006

³ 山西大学极端光学协同创新中心, 山西太原 030006

散射气溶胶浓度测量近前向散射灵敏度线性响应范围 scattering aerosol concentration measurement near-forward scattering sensitivity linear response range

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摘要

基于近前向光散射法, 实现了多分散亚微米级气溶胶的浓度测量。测量装置采用卤钨灯作为光源, 整形后的环状光束被会聚至待测气体处, 散射光经透镜收集后, 由光电探测器进行探测, 分析探测光强度的变化, 从而反演出被测气溶胶的浓度。实验结果表明, 该测量方法的探测灵敏度能够达到10-4 μg·L-1, 线性响应范围覆盖了6个数量级。该方法可应用于核工业、医药、微电子等领域。

Abstract

Based on the near-forward light scattering method, the polydispersion sub-micron aerosol concentration measurement is realized. The tungsten halogen lamp is employed as the light source in the measurement device. The shaped annular beam is converged to the gas to be measured. After being collected by a lens, the scattering light is detected by a photodetector. The aerosol concentration is inversed by analyzing the intensity variation of the detected light. The experimental results show that the detection sensitivity of the measurement method can reach to 10-4 μg·L-1 and the linear response range covers 6 orders of magnitude. This mothod can be applied to the fields of nuclear industry, medicine, microelectronics, and so on.

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马英, 王龙江, 俞杰, 王坤俊, 尹王保, 董磊. 基于近前向光散射法的气溶胶浓度测量[J]. 激光与光电子学进展, 2017, 54(9): 092901. Ma Ying, Wang Longjiang, Yu Jie, Wang Kunjun, Yin Wangbao, Dong Lei. Aerosol Concentration Measurement Based on Near-Forward Light Scattering Method[J]. Laser & Optoelectronics Progress, 2017, 54(9): 092901.

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