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Direct linkLaFratta, Christopher N.; Jain, Swapan; Pelse, Ian; Simoska, Olja; Elvy, Karina – Journal of Chemical Education, 2013
The purpose of this experiment was to create a simple and inexpensive flame photometer to measure the concentration of sodium in beverages, such as Gatorade. We created a nebulizer using small tubing and sprayed the sample into the base of a Bunsen burner. Adjacent to the flame was a photodiode with a filter specific for the emission of the sodium…
Descriptors: Science Instruction, College Science, Middle Schools, Secondary School Science
Wigton, Benjamin T.; Chohan, Balwant S.; McDonald, Cole; Johnson, Matt; Schunk, Doug; Kreuter, Rod; Sykes, Dan – Journal of Chemical Education, 2011
A low-cost portable fluorimeter was constructed using a 360 nm LED for excitation and a silicon photodiode for detection. The instrument is simple to operate and has been used to investigate fluorescent whitening agents extracted from various brands of paper, to determine the linear range and limit of detection of quinine in various commercial…
Descriptors: Science Experiments, Middle Schools, High Schools, College Science
