University of Hertfordshire

From the same journal

By the same authors

A real-time monitoring system for airborne particle shape and size analysis

Research output: Contribution to journalArticle

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Original languageEnglish
Pages (from-to)19215-19221
JournalJournal of Geophysical Research: Atmospheres
Journal publication date1996
Volume101
IssueD14
DOIs
Publication statusPublished - 1996

Abstract

This paper describes a new instrument for the study of airborne particles. The instrument performs a rapid analysis of the transient spatial intensity distribution of laser-light scattered by individual aerosol particles drawn from an ambient environment and uses this to characterize the particles in terms of both size and shape parameters. Analyses are carried out at peak particle throughput rates of up to 10,000 particles per second, and semiquantitative data relating to the size and shape (or more correctly asymmetry) spectra of the sampled particles are provided to the user via a graphical display which is refreshed or updated at 5-s intervals. In addition to the real-time display of data, continuous data recording allows subsequent replay of measurements at either normal or high speed. Preliminary experimental results are given for aerosols of both spherical and nonspherical particle types, and these suggest the instrument may find use in environmental monitoring of aerosols or clouds where some real-time semiquantitative assessment of particulate size and shape spectra may be desirable as an aid to characterizing the aerosol and its constituent particulate species.

Notes

Original article can be found at: http://www.agu.org/journals/jd/ Copyright American Geophysical Union. DOI: 10.1029/96JD00228 [Full text of this article is not available in the UHRA]

ID: 174299