Title :
A polymer based sensor for phosphate detection in water
Author :
Faezeh Arab Hassani;Nicola A Morley;Maria Romero-González
Author_Institution :
Dept. Civil and Structural Engineering, The University of Sheffield, Sheffield, United Kingdom
Abstract :
This paper presents the detection of phosphate (PO4-3) concentration in water by using a commercial quartz crystal microbalance (QCM) sensor that was coated with a novel polymeric affinity layer for the first time. The QCM sensor was exposed to PO4-3 and chloride (Cl-) solutions in various concentrations to investigate the sensitivity of the affinity layer. Changes in the viscosity of a solution, and weak binding of ions onto the polymeric layer eliminated the effect of PO4-3 binding to the polymer and hardened the concentration detection. Therefore, we have proposed a new method in which an intermediate Cl- solution is applied before introducing the PO4-3 solution to detect the concentration level in a continuous flow.
Keywords :
"Polymers","Crystals","Sensitivity","Ions","Viscosity","Phosphorus","Liquids"
Conference_Titel :
SENSORS, 2015 IEEE
DOI :
10.1109/ICSENS.2015.7370510