Development and validation of a low-cost visible light spectrophotometer

Spectrophotometry is a key area of research when it comes to analysis of optic-matter interaction. This paper shows the development of an affordable visible light spectrophotometer that can measure absorbance and transmittance of liquid solutions of various materials within the visible range of elec...

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Bibliographic Details
Published in2017 4th International Conference on Advances in Electrical Engineering (ICAEE) pp. 653 - 657
Main Authors Ashfaque-E-Alam, Md, Islam, Md Rakibul, Faria, Ismat Jabeen
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2017
Subjects
Absorbance
Absorption
Batteries
Beer-Lambert law
Characterization
Detectors
Electron tubes
Instruments
KMnO 4
Microcontroller
Microcontrollers
Spectroscopy
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Summary:Spectrophotometry is a key area of research when it comes to analysis of optic-matter interaction. This paper shows the development of an affordable visible light spectrophotometer that can measure absorbance and transmittance of liquid solutions of various materials within the visible range of electromagnetic spectrum. The system has a bandwidth of 72.5nm within the visible range. The instrument is verified using KMnO 4 solutions having different concentrations. Absorbance values of the solutions are recorded and analyzed using Origin Pro 8.00 and extinction coefficient of KMnO 4 is calculated to be 2.306 × 10 -7 Lmol -1 cm -1 at 525nm. Validity of this result is verified from previous researches conducted with commercial UV-Vis spectrophotometers.
ISSN:2378-2692
DOI:10.1109/ICAEE.2017.8255437