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IMPROVED ANALYTICAL TECHNIQUE FOR THE DETERMINATION OF GAS AND AQUEOUS PHASE HYDROGEN PEROXIDE: INSTRUMENT MANUAL
Citation:
Dasgupta, P. IMPROVED ANALYTICAL TECHNIQUE FOR THE DETERMINATION OF GAS AND AQUEOUS PHASE HYDROGEN PEROXIDE: INSTRUMENT MANUAL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/3-88/032.
Description:
The document describes the construction and operation of an automated instrument package designed to measure gaseous and aqueous phase hydrogen peroxide. The chemical determination relies on the peroxidase-mediated conversion of p-hydroxyphenylacetic acid to 6,6'-dihydroxy-3,3'-biphenyldiacetic acid by H2O2 and subsequent base-induced ionization of all carboxylic and phenolic protons to form a fluorescent product. Organic hydroperoxides (hereafter referred to as organic peroxides) react in a similar fashion. The detection limit for gas phase H2O2 is 3 x 10 to the minus 11th power v/v (sampling rate 2 L/min) with a lag time of 1 min and 0-90 percent rise time of 0.8 min.