Optical Particle Spectrometry - Problems and Prospects

Autor(en)

Wladyslaw Szymanski, Attila A. Nagy, Aladar Czitrovszky

Abstrakt

Optical particle counters and spectrometers have found broad use in aerosol and atmospheric research, air pollution studies and industrial particle monitoring. The utilization of the elastic scattering of light results in increasingly portable and cost effective instrumentation due to the ongoing miniaturization of building components such as light sources and detectors. However, the non-monotonic size dependence of scattered light intensity and its variability with the changing refractive index of particles influences the function of most single optical particle counters and spectrometers. This problem is a key issue still driving the development of these instruments, first introduced more than half a century ago. Ongoing progress has resulted in not only smaller but also more sophisticated and precise instruments, but the old weakness still remains—varying response to changes of the index of refraction of particles and non-monotonic response curves. Consequently, alternative approaches exploiting elastic scattering are presented here.

Organisation(en)

Aerosolphysik und Umweltphysik

Externe Organisation(en)

Magyar Tudományos Akadémia

Journal

Journal of Quantitative Spectroscopy & Radiative Transfer

Band

110

Seiten

918-929

Anzahl der Seiten

12

ISSN

0022-4073

DOI

https://doi.org/10.1016/j.jqsrt.2009.02.024

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

210006 Nanotechnologie, 208003 Umweltbiotechnologie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/4e0f929f-fc33-43c4-8dcc-296f7f869707