Simultaneous light scattering and intrinsic fluorescence measurement for the classification of airborne particles

被引：93

作者：

Kaye, PH ^{[1
]}

Barton, JE

Hirst, E

Clark, JM

机构：

[1] Univ Hertfordshire, Sci & Technol Res Ctr, Hatfield AL10 9AB, Herts, England

[2] Def Evaluat & Res Agcy, Salisbury SP4 0JQ, Wilts, England

来源：

APPLIED OPTICS | 2000年 / 39卷 / 21期

关键词：

D O I：

10.1364/AO.39.003738

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe a prototype laboratory light-scattering instrument that integrates two approaches to airborne particle characterization: spatial light-scattering analysis and intrinsic fluorescence measurement, with the aim of providing an effective means of classifying biological particles within an ambient aerosol. The system uses a single continuous-wave 266-nm ultraviolet laser to generate both the spatial elastic scatter data (from which an assessment of particle size and shape is made) and the particle intrinsic fluorescence data from particles in the approximate size range of 1-10-mu m diameter carried in a sample airflow through the laser beam. Preliminary results suggest that this multiparameter measurement approach can provide an effective means of classifying different particle types and can reduce occurrences of false-positive detection of biological aerosols. (C) 2000 Optical Society of America.

引用

页码：3738 / 3745

页数：8

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