PHENOLICS (SPECTROPHOTOMETRIC, MANUAL 4-AAP WITH DISTILLATION)
This method is applicable to the analysis of ground water, drinking, surface, and saline waters, and domestic and industrial wastes. Phenolic materials react with 4-aminoantipyrine in the presence of potassium ferricyanide at a pH of 10 to form a stable reddish-brown antipyrine dye. The amount of color produced is a function of the concentration of phenolic material.
– Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020)
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