Absorption and scattering characterization of airborne microparticulates by a cavity ringdown technique

Valery Bulatov; Yuheng Chen; Aktam Khalmanov; Israel Schechter

doi:10.1007/s00216-005-0173-8

Absorption and scattering characterization of airborne microparticulates by a cavity ringdown technique

Valery Bulatov, Yuheng Chen, Aktam Khalmanov, Israel Schechter^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Nonresonant cavity ringdown laser absorption spectroscopy (CRLAS) was applied for detection and characterization of airborne particulates. Sensitive detection of a variety of aerosols under ambient conditions was achieved. The method provides, for the first time, time-resolved absolute aerosol concentration, with spatial resolution (along a line). The first report on absorption spectroscopy of monodispersed aerosols (in the size range 100-200 nm) is provided, and comparisons are made with the bulk data. The results indicate the possibility of applying CRLAS for selective analysis of aerosols. A new method for estimating the aerosol refraction index is also obtained from the ringdown data.

Original language	English
Pages (from-to)	155-160
Number of pages	6
Journal	Analytical and Bioanalytical Chemistry
Volume	384
Issue number	1
DOIs	https://doi.org/10.1007/s00216-005-0173-8
State	Published - Jan 2006
Externally published	Yes

Keywords

Aerosols
Cavity ringdown
Laser Spectroscopy

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abstract = "Nonresonant cavity ringdown laser absorption spectroscopy (CRLAS) was applied for detection and characterization of airborne particulates. Sensitive detection of a variety of aerosols under ambient conditions was achieved. The method provides, for the first time, time-resolved absolute aerosol concentration, with spatial resolution (along a line). The first report on absorption spectroscopy of monodispersed aerosols (in the size range 100-200 nm) is provided, and comparisons are made with the bulk data. The results indicate the possibility of applying CRLAS for selective analysis of aerosols. A new method for estimating the aerosol refraction index is also obtained from the ringdown data.",

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AU - Chen, Yuheng

AU - Khalmanov, Aktam

AU - Schechter, Israel

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AB - Nonresonant cavity ringdown laser absorption spectroscopy (CRLAS) was applied for detection and characterization of airborne particulates. Sensitive detection of a variety of aerosols under ambient conditions was achieved. The method provides, for the first time, time-resolved absolute aerosol concentration, with spatial resolution (along a line). The first report on absorption spectroscopy of monodispersed aerosols (in the size range 100-200 nm) is provided, and comparisons are made with the bulk data. The results indicate the possibility of applying CRLAS for selective analysis of aerosols. A new method for estimating the aerosol refraction index is also obtained from the ringdown data.

KW - Aerosols

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