Chemical Sensors based on In Situ Spectroscopy
A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".
Deadline for manuscript submissions: closed (31 July 2015) | Viewed by 81108
Special Issue Editors
Interests: Noninvasive glucose measurements in human subjects; real-time bioreactor monitoring and control; near infrared spectroscopy; terahertz spectroscopy; dielectric spectroscopy
Special Issue Information
Dear Colleagues,
Analytical measurements via in situ spectroscopy represent a challenging area of chemical sensor development. Such measurements involve passing a selected band of radiation through a sample and extracting the desired chemical information from the resulting spectrum. Approaches include, but are not limited to, near infrared, mid-infrared, Raman scattering, magnetic resonance, impedance, terahertz, and dielectric spectroscopies. Typically, multivariate analysis methods are required to properly extract the desired analytical information from the in situ spectra, owing to the complexity of the sample matrix. This approach offers several attractive features, including the ability to quantify multiple analytes simultaneously within the sample matrix. In addition, this spectroscopic approach is both reagentless and nondestructive, thereby enabling real-time measurements without perturbing the system under investigation. These features promise rapid, real-time analytical measurements that are well suited for in situ control of critical processes, as well as monitoring quality of supply-chain materials. For these reasons, spectroscopic sensors have been developed for a variety of applications, including those in food sciences, petroleum refining, bioprocessing, biomedical sciences, environmental monitoring, and others. Still, longstanding analytical issues remain that limit the implementation of this approach, including selectivity in complex sample matrixes, poor calibration robustness over time, sensitivity, and limits of detection.
This Special Issue of Sensors will be dedicated to advances in the contemporary development of spectroscopic chemical sensors with an emphasis on overcoming these longstanding issues as well as their applications to novel processes. Both original research reports and reviews are welcome. Research reports must advance analytical science by expanding our overall understanding of in situ measurements. Reviews must provide a critical assessment of a selected element of the field.
Prof. Dr. Mark A. Arnold
Prof. Dr. Hoeil Chung
Guest Editors
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Keywords
- spectroscopic sensors
- noninvasive sensing
- real-time monitoring
- near-infrared spectroscopy
- mid-infrared spectroscopy
- Raman scattering spectroscopy
- chemometrics
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