Automated Curve Tracer for Digitizing Spectra
Author Information
Author(s): J. C. W. G. Bink, H. A. van 't Klooster
Primary Institution: State University of Utrecht, Laboratory of Analytical Chemistry
Hypothesis
Can a microcomputer-based automated curve tracer accurately digitize paper-recorded spectra?
Conclusion
The study demonstrates that a low-cost, fully automated curve-tracing digitizer can be built using a microcomputer, a plotter, and a high-resolution optical reflective sensor.
Supporting Evidence
- The curve tracer digitized spectra with an accuracy of 0.2 mm.
- Replotted spectra closely resembled the original paper-recorded spectra.
- The system can digitize a spectrum in approximately 15 to 20 minutes.
Takeaway
This study shows how a computer can help turn paper drawings of spectra into digital data, making it easier to analyze them.
Methodology
The curve tracer was tested on 150 infra-red spectra of purified liquid hydrocarbons, digitizing them with specific intervals and accuracy measures.
Limitations
The accuracy of the digitization depends on the quality of the plotter and the resolution of the optical sensor.
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