Calibration curve for sugar concentration determination an LED-based spectrometer

Authors

Mary Angelie M. Alagao ⋅ PH National Institute of Physics, University of the Philippines Diliman
Rachel Jean S. Cabangon ⋅ PH Institute of Biology, University of the Philippines Diliman
Giovanni A. Tapang ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

An LED-based spectrometer was developed using off-the-shelf light emitting diodes (LEDs) functioning both as the emitter and the detector. Its reliability was tested through a phenol-sulfuric acid assay to determine the concentration of sugars in solutions. From the transmittance values read using the LED-based spectrometer, a calibration curve was constructed. The development of a low-cost LED-based spectrometer can be useful for classroom experiments and scientific research since commercial spectrometers are expensive.

Downloads

Issue

2014: Proceedings of the 32nd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP2014-PB-19

Section

Poster Session PB

Published

2014-10-17

How to Cite

[1]

MAM Alagao, RJS Cabangon, and GA Tapang, Calibration curve for sugar concentration determination an LED-based spectrometer, Proceedings of the Samahang Pisika ng Pilipinas 32, SPP2014-PB-19 (2014). URL: https://proceedings.spp-online.org/article/view/1891.