Caffeine determination in soft drinks throuh UV-spectrophotometry
DOI:
https://doi.org/10.5902/2179460X24932Abstract
Six different commercial brands of soft drinks were investigated for their caffeine concentrations with results that vary from a minimum of 68.1 μg for lemon drinks up to a maximum of 40, 30 mg caffeine for cola drinks, in 300 ml bottles.
The spectrophotometric method for caffeine determination in the UV-range (λ = 276,5 nm) shown to be free from interferences, with good precision and reproducibility.
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References
FUHNER, H., Toxicologia Médica. Editorial Científico Médico. Barcelona, Espanha, 1956.
MITCHELL, R.H., SCOTT, W.A., and WEST, P.R. J. Chem. Educ., 51, 69 (1974).
VAN ATTA, E.R.,J. Chem. Educ., 56,666 (1979).
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