title: Flow injection analysis for residual chlorine using Pb(II) ion-selective electrode detector.
abstract: A simple flow injection analysis (FIA) system for residual chlorine in tap water has been developed by using a Pb(II) ion-selective electrode (ISE) detector. The method is based on a specific response of the Pb(II)-ISE to residual chlorine. The FIA system consists of a millivolt meter, a peristaltic pump, a Pb(II)-ISE detector and a recorder. A linear working curve between peak height and concentration of residual chlorine was obtained from 0.1 to 1 mg l(-1) for the developed FIA system. The relative standard deviation for repeated injections of a 0.2 mg l(-1) residual chlorine sample was 2%. The regression line and its correlation factor between the conventional o-tolidine colorimetric method and the present method were Y=0.75X+0.17 and 0.967, respectively, for this determination.
authors.affiliation: R&D Division, DKK Corporation, Kitamachi, Kichijoji, Musashino 180, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Sakai
authors.forename: A
authors.initials: A
authors.lastname: Hemmi
authors.forename: H
authors.initials: H
authors.lastname: Hachiya
authors.forename: F
authors.initials: F
authors.lastname: Kobayashi
authors.forename: S
authors.initials: S
authors.lastname: Ito
authors.forename: Y
authors.initials: Y
authors.lastname: Asano
authors.forename: T
authors.initials: T
authors.lastname: Imato
authors.forename: Y
authors.initials: Y
authors.lastname: Fushinuki
authors.forename: I
authors.initials: I
authors.lastname: Taniguchi