A Compact, Pulsed Infrared Laser-Excited Photothermal Deflection Spectrometer

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

A prototype small photothermal deflection apparatus was constructed on a laboratory bench. Not including excitation laser, data collection computer, and gas pumps, the apparatus fits on a bench space with a footprint of about 10 cm × 10 cm. The apparatus lends itself to miniaturization in future assemblies. The apparatus was tested relative to the conventional laboratory-scale photothermal apparatus. Digital filtering procedures developed in this laboratory were used to collect and analyze the data. Numerical simulation of photothermal signal is performed to accurately predict the heat flow process as sample volumes are scaled down. The results show that increased sensitivity is possible with small apparatus configurations. The prototype apparatus also exhibits high linear response with pulsed irradiance for linear absorbers. Future improvements could include miniaturization with robust configuration that will allow for portable use in trace analysis monitoring of atmospheric pollutants.

Keywords: FLUOROCARBONS; INFRARED SPECTROSCOPY; INSTRUMENTATION; IR SPECTROSCOPY; MINIATURIZATION; PHOTOTHERMAL DEFLECTION APPARATUS; SPECTROMETRY

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/10-06000

Affiliations: 1: Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA 2: Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, USA

Publication date: February 1, 2011

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more