NOVEL DESIGN OF A RESONANT PHOTOACOUSTIC SPECTROPHONE FOR ELEMENTAL CARBON MASS MONITORING

被引：26

作者：

PETZOLD, A

NIESSNER, R

机构：

[1] Institute of Hydrochemistry, Technical University of Munich, D-81377 Munich

来源：

APPLIED PHYSICS LETTERS | 1995年 / 66卷 / 10期

关键词：

D O I：

10.1063/1.113271

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An improved design of a resonant photoacoustic spectrophone is reported for aerosol absorption measurements by using a near-infrared laser diode (λ=802 nm; P=450 mW) in combination with a double-pass configuration for excitation of azimuthal modes and right-angle mounting of two electret microphones for signal detection. As a result of the new spectrophone setup a small-sized portable sensor system for real-time in situ elemental carbon monitoring is presented. The detection limit is estimated to 4.5×10-8cm-1 or 1.5 μg elemental carbon per m 3.© 1995 American Institute of Physics.

引用

页码：1285 / 1287

页数：3

共 13 条

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