@article{wjce2021947,
author={{Gr?b, Patrick and Geidel, Ekkehard and Schmitt, Hans-Christian},
title={Low-cost Spectroscopy: Experiments in Various Spectral Ranges},
journal={World Journal of Chemical Education},
volume={9},
number={4},
pages={144--151},
year={2021},
url={http://pubs.sciepub.com/wjce/9/4/7},
issn={2375-1657},
abstract={Teaching the basic principles of molecular spectroscopic techniques on an experimental basis is often a particular challenge due to the relatively high cost of the required experimental equipment. The present contribution therefore offers an experimentally-based introduction into the field of spectroscopy using low-cost devices for practical courses at undergraduate level and for chemistry lessons in high schools. Using low-cost devices are also useful for schools in developing countries or poorly-funded school systems. Several experiments, specifically tailored for chemistry lessons, are developed, aiming to provide a close relation to the everyday life experience of students. Initially, a simple spectrometer working within the visible range of light is constructed by the student themselves. This low-cost dispersive spectrometer is employed for quantitative food analyses. In a second step, an introduction to spectroscopy in the near-infrared range is given using an example based on the identification of plastics. On this basis, a model experiment using a self-constructed apparatus for plastic waste separation in miniature was developed. Finally, experiments in the mid-infrared range are presented. They introduce into the functionality of a Michelson interferometer and demonstrate the use of low-cost carbon dioxide sensors. Using this strategy, students gain easier access to an understanding of radiation-matter interaction.},
doi={10.12691/wjce-9-4-7}
publisher={Science and Education Publishing}
}