Article ID Journal Published Year Pages File Type
1170559 Analytica Chimica Acta 2007 5 Pages PDF
Abstract
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.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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