Hydrogen peroxide peracetic acid determination

Satisfactory 40% peracetic acid is obtainable from Buffalo Electrochemical Corporation, Food Machinery and Chemical Corporation, Buffalo, New York. The specifications given by the manufacturer for its composition are peracetic acid, 40% hydrogen peroxide, 5% acetic acid, 39% sulfuric acid, 1% water, 15%. Its density is 1.15 g./ml. The peracetic acid concentration should be determined by titration. A method for the analysis of peracid solutions is based on the use of ceric sulfate as a titrant for the hydrogen peroxide present, followed by an iodometric determination of the peracid present.3 The checkers found that peracetic acid of a lower concentration (27.5%) may also be used without a decrease in yield. The product was found to be sufficiently pure, after only one recrystallization from 60 ml. of petroleum ether (b.p. 40-60°) and cooling overnight to —18°, to be used in the next step. 

The peracetic acid content of the reagent may be determined by adding an aliquot to an equal volume of ice and water and titrating first with ceric sulfate solution until the orange color of the ceric ion remains (to eliminate hydrogen peroxide) and then adding potassiiun iodide and titrating with standard sodium thiosulfate solution. 

Similarly, for an oxidant that contains an indirectly activated oxygen, the preparation method can always be used to determine the oxidant. For example, lodosylbenzene (PhlO), a common oxidant, is made by treatment of the hyperva-lent iodine reagent PhI(OAc)2 with sodium hydroxide. The diacetate is made from the action of peracetic acid and acetic acid on iodobenzene. Thus, the iodosylben-zene oxidant can be traced to hydrogen peroxide, which is used to make the peracetic acid. 

Pettas, LA. and Karayannis, M.I. (2004) Simultaneous spectra-kinetic determination of peracetic acid and hydrogen peroxide in a brewery cleaning-in-place disinfection process. Anal... 

In the second part of this chapter, it is revealed that FUV spectroscopy with the restricted spectral resolution such as 2 nm is still very effective for the practical online analysis of aqueous solutions. To evaluate and propose the usefulness of spectrometer with nitrogen gas purge, a practical experiment applying the spectrometer to the determination analyses for peracetic acid (PAA), hydrogen peroxide (H2O2), and acetic acid (AA) in disinfectant solutions is performed. 

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