Potentiometry of effective concentration of polyacrylate as scale inhibitor

被引：29

作者：

Yuchi, Akio ^{[1
]}

Gotoh, Yasumasa ^{[1
]}

Itoh, Shinsuke ^{[1
]}

机构：

[1] Nagoya Inst Technol, Grad Sch Engn, Nagoya, Aichi 4668555, Japan

来源：

ANALYTICA CHIMICA ACTA | 2007年 / 594卷 / 02期

基金：

日本科学技术振兴机构;

关键词：

polyacrylate; scale inhibitor; calcium carbonate; copper(II) ion-selective electrode; complexation equilibria;

D O I：

10.1016/j.aca.2007.05.049

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The concentration of polyacrylate (PA) used as a scale inhibitor was potentiometrically determined with a solid state copper ion-selective electrode after addition of Cu2+ as a probe. While the conventional methods monitor only the total concentration of PA, the proposed method measures the free, "effective" concentration of PA in equilibrium with species like Ca2+ and CaCO3. The slope of a potential response to PA was -40 mV decade(-1) and the limit of detection was 10(-6.3) M (= mol dm(-3)) at a probe concentration of 10(-6) M. The system could be used to control the PA concentration just enough to prevent the scale formation in various circulating water systems. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：199 / 203

页数：5

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