Quantum cascade laser-based photoacoustic spectroscopy of volatile chemicals: application to hexamethyldisilazane.
Spectrochim Acta A Mol Biomol Spectrosc
; 64(2): 426-9, 2006 May 15.
Article
em En
| MEDLINE
| ID: mdl-16420984
ABSTRACT
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 microm 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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Teoria Quântica
/
Compostos de Organossilício
/
Lasers
Idioma:
En
Revista:
Spectrochim Acta A Mol Biomol Spectrosc
Assunto da revista:
BIOLOGIA MOLECULAR
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Itália