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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

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Intracavity absorption spectrometry: a new technique for process analysis?

Elejalde, U. and Wright, A.J. and Girkin, J.M. (2008) Intracavity absorption spectrometry: a new technique for process analysis? Chimca Oggi, 26 (1). pp. 12-13. ISSN 0392-839X

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Abstract

We have investigated the application of narrow-band intracavity spectroscopy for high throughput characterization and detection of reaction products in-situ. An external cavity diode laser (ECDL), wavelength tunable from 810-890 nm, was used to measure varying concentrations of a range of compounds in solution. A linear calibration curve for parts per billion (ppb) concentrations corresponding to 17nM has been recorded. By replacing the grating with a high reflective mirror, parts per trillion (ppt) concentration detection was also achieved corresponding to 340pM. We believe that this technique provides a method for fast and safe measurements of reactions in real time and has potential applications in the pharmaceutical and chemical industry as well as for integrated bio-diagnostics lab-on-a-chip devices.