||Analysis for Ozone and Residual Chlorine by Differential Pulse Polarography of Phenylarsine Oxide.
Smart, Ronald B. ;
Lowry, Joe H. ;
Mancy, Khalil H. ;
||Michigan Univ., Ann Arbor.;Environmental Monitoring and Support Lab.-Cincinnati, OH.
Water analysis ;
Water pollution ;
Differential pulse polarography ;
Arsine oxide/phenyl ;
Water pollution detection
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The differential pulse polarography of phenylarsine oxide (C6H5AsO) as an indirect determination of ozone and residual chlorine is investigated. This procedure is compared with the standard methods of analysis for these oxidants in water and wastewater. The limit of detection for free chlorine at pH 7 is 3.3 ppb of Cl, 1.6 ppb of Cl for total chlorine at pH 4, and 2.5 ppb of O3 at pH 4. The described method offers the advantage of fixing free chlorine in the field.