International Journal of Analytical Chemistry / 2020 / Article / Fig 3

Research Article

A Simple Spectrophotometric Method for Determination of Glyoxylic Acid in Its Synthesis Mixture

Figure 3

Optical absorption versus volume of concentrated sulfuric acid in the reagent with 0.25 mL glyoxylic acid 0.028 M, 0.6 mL tryptophan 0.016 M, and 2 mL of ferric chloride 0.025 M.

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