CHEMILUMINESCENCE SENSOR WITH URANINE IMMOBILIZED ON AN ANION-EXCHANGE RESIN FOR MONITORING FREE CHLORINE IN TAP WATER

被引：65

作者：

NAKAGAMA, T

YAMADA, M

HOBO, T

机构：

[1] Department of Industrial Chemistry, Faculty of Technology, Tokyo Metropolitan University, Setagaya, Tokyo

来源：

ANALYTICA CHIMICA ACTA | 1990年 / 231卷 / 01期

关键词：

D O I：

10.1016/S0003-2670(00)86390-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A chemiluminescence sensor using a xanthene dye immobilized on an ion-exchange resin as an indicator phase is described for the continuous monitoring of free chlorine (HOCl) in tap water. Of the dyes and ion-exchange resins tested, the immobilization giving the best dynamic response characteristics was achieved with a combination of uranine and a weakly basic anion-exchange resin (Amberlite IRA-93). The sensor, a Pyrex tube (20 mm × 3 mm i.d.) packed with the resin and placed close to a photomultiplier tube, provided a constant signal within ca. 1 min of a concentration change of free chlorine, a linear calibration graph between 1 × 10-3 and 2 × 10-6 M (the detection limit at a signal-to-noise ratio of 3) and an r.s.d. of 1.6% for 1 × 10-5 M free chlorine. The sensor was unique in being insensitive to chloramines and permitted free chlorine to be determined in tap water with no interference from chloramines and other compounds. © 1990.

引用

页码：7 / 12

页数：6

共 18 条

[1] FIBER-OPTIC SENSOR FOR THE DETERMINATION OF GLUCOSE USING MICELLAR ENHANCED CHEMI-LUMINESCENCE OF THE PEROXYOXALATE REACTION [J].