Advances in micro-gas chromatography with in-column infrared spectroscopic detection using sorbent-coated hyper-bounce ATR crystals for early warning applications

Robert Furstenberg; Christopher J. Breshike; Tyler J. Huffman; Christopher A. Kendziora; R. Andrew McGill

doi:10.1117/12.2663840

15 June 2023 Advances in micro-gas chromatography with in-column infrared spectroscopic detection using sorbent-coated hyper-bounce ATR crystals for early warning applications

Robert Furstenberg, Christopher J. Breshike, Tyler J. Huffman, Christopher A. Kendziora, R. Andrew McGill

Author Affiliations +

Proceedings Volume 12516, Next-Generation Spectroscopic Technologies XV; 125160B (2023) https://doi.org/10.1117/12.2663840
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

We are developing a vapor detection platform that combines the mixture separation power of gas chromatography with the identification power of infrared spectroscopy. The gas chromatography column is implemented using a meandering channel (imprinted in a molded lid) with the bottom of the channel consisting of a germanium wafer where an infrared laser is introduced in order to perform ATR IR spectroscopy along several segments of the column. We overcome the relative insensitivity of the ATR method by exploiting multiple bounces along the ATR wafer, as well as coating the wafer with a thin film of sorbent which adsorbs and concentrates the analyte in the evanescent region at the surface of the wafer. A unique advantage of our technique is that we collect signal from multiple points along the GC column (including the beginning) for rapid response. This is a major milestone towards implementing a complete micro-gas chromatography sensor for rapid analysis of complex chemical mixtures. Such technology is very attractive for early warning applications in defense and environmental monitoring.

Conference Presentation

Citation Download Citation

Robert Furstenberg, Christopher J. Breshike, Tyler J. Huffman, Christopher A. Kendziora, and R. Andrew McGill "Advances in micro-gas chromatography with in-column infrared spectroscopic detection using sorbent-coated hyper-bounce ATR crystals for early warning applications", Proc. SPIE 12516, Next-Generation Spectroscopic Technologies XV, 125160B (15 June 2023); https://doi.org/10.1117/12.2663840

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available