Quantum cascade laser-based photoacoustic spectroscopy of volatile chemicals:: Application to hexamethyldisilazane

被引：7
作者：
Elia, A [1 ]
Rizzi, F [1 ]
Di Franco, C [1 ]
Lugarà, PM [1 ]
Scamarcio, G [1 ]
机构：
[1] INFM, Reg Lab LIT3, Dept Interanteneo Fis Michelangelo Merlin, I-70126 Bari, Italy
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2006年 / 64卷 / 02期
关键词：
hexamethyldisilazane; quantum cascade laser; infrared spectroscopy; photoacoustic spectroscopy;
D O I：
10.1016/j.saa.2005.07.041
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The use of photoacoustic spectroscopy and mid-infrared quantum-cascade lasers (QCLs) for the detection of hexamethyldisilazane (HMDS) is reported. A detection limit of 200 parts in 10(9) is found using a Fabry-Perot QCL operated at 8.4 mu m in pulsed mode and a photoacoustic cell equipped with four electret microphones. The laser multimode spectrum matches the range of the N-H bending absorption band of HMDS. Further improvements to reach lower detection limits are discussed. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：426 / 429
页数：4
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