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Direct linkBullis, Ryan; Coker, Joseph; Belding, Jacob; De Groodt, Adam; Mitchell, Dylan W.; Velazquez, Nancy; Bell, Ashtyn; Hall, Jaycee; Gunderson, William A.; Gunderson, Julie E. C. – Journal of Chemical Education, 2021
A fluorometer is a device that measures the spectroscopic properties of fluorescent materials, and fluorometry is used widely in chemistry research settings to characterize fluorescent samples. One of the obstacles faced by undergraduate programs looking to implement fluorometer-based experiments into their laboratory curriculum is the high cost…
Descriptors: Chemistry, Measurement Equipment, Laboratory Equipment, Spectroscopy
Ledesma, Claudia Martins; Krepsky, Larissa Mascarenhas; Borges, Endler Marcel – Journal of Chemical Education, 2019
Here, students determine the total phenolic content in beers using the Folin-Ciocalteu assay. The Folin-Ciocalteu reagent is a yellow complex, in an alkaline medium; it reacts with phenols and non-phenolic reducing substances to form a blue complex. Quantitative analysis was carried out using absorbance measured at 765 nm (standard method) and…
Descriptors: Science Instruction, Science Experiments, Chemistry, College Science
