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K. Robards, I. D. Mckelvie, R. L. Benson, P. J. Worsfold, N. J. Brundell, H. Casey; Determination of carbon, phosphorus, nitrogen and silicon species in water. Anal. Chim. Acta. 287 (1994) 147-190.

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• TITLE: New solid state phosphate sensitive electrodes for routine environmental monitoring

  AUTHORS: Fikru Tafesse

  KEYWORDS: Phosphate selective electrodes; selectivity coefficient; ionic strength; inorganic phosphate, environmental monitoring.

  JOURNAL NAME: Open Journal of Applied Sciences, Vol.2 No.4B, January 15, 2013

  ABSTRACT: Highly selective and sensitive phosphate sensors have been fabricated by constructing a solid membrane disk consisting of variable mixtures of aluminium powder (Al), aluminium phosphate (AlPO4) and powdered copper (Cu). Both binary and ternary electrode systems are produced. The ternary membranes exhibit greater selectivity over a wide range of concentrations. The ternary electrode with the composition 25% AlPO4, 25% Cu and 50% Al was selected as our preferred electrode. The newly fabricated ternary membrane phosphate selective electrodes exhibited linear potential response in the concentration range of 1.0×10?1 to 1.0×10?6molL?1. The electrodes also exhibit a fast response time of