Commenced in January 2007
Paper Count: 30172
Analysis of Phosphate in Wastewater Using an Autonomous Microfluidics-Based Analyser
Abstract:A portable sensor for the analysis of phosphate in aqueous samples has been developed. The sensor incorporates microfluidic technology, colorimetric detection, and wireless communications into a compact and rugged portable device. The detection method used is the molybdenum yellow method, in which a phosphate-containing sample is mixed with a reagent containing ammonium metavanadate and ammonium molybdate in an acidic medium. A yellow-coloured compound is generated and the absorption of this compound is measured using a light emitting diode (LED) light source and a photodiode detector. The absorption is directly proportional to the phosphate concentration in the original sample. In this paper we describe the application of this phosphate sensor to the analysis of wastewater at a municipal wastewater treatment plant in Co. Kildare, Ireland.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1329893Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1758
 S. R. Carpenter, N. F. Caraco, D. L. Correll, R. W. Howarth, A. N. Sharpley, and V. H. Smith, "Nonpoint pollution of surface waters with phosphorus and nitrogen," Ecological Applications, Vol. 8, Aug. 1998, pp. 559-568.
 M. Coquery, A. Morin, A. Bécue and B. Lepot, "Priority substances of the European Water Framework Directive: analytical challenges in monitoring water quality," Tr. Anal. Chem., Vol. 24, Feb. 2005, pp. 117- 127.
 P. Jordan, J. Arnscheidt, H. McGrogan, S. McCormick, "High-resolution phosphorus transfers at the catchment scale: the hidden importance of non-storm transfer," Hydrology and Earth System Sciences, 9, Dec 2005, pp. 685-691.
 M. Bowden, M. Sequeira, J.P. Krog, P. Gravesen, and D. Diamond, A prototype industrial sensing system for phosphorus based on micro system technology, Analyst, Jan. 2002, 127, pp. 1-4.
 M. Bowden, M. Sequeira, J.P. Krog, P. Gravesen, and D. Diamond, "Analysis of river water samples utilising a prototype industrial sensing system for phosphorus based on micro-system technology," J. Environ. Monit., Aug. 2002, 4, pp. 767-771.
 A.G. Crevillen, M. Hervas, M.A. Lopez, M.C. Gonzalez, and A. Escarpa, "Real sample analysis on microfluidic devices," Talanta, 74, Oct. 2007, pp. 342-357.
 C. Slater, J. Cleary, C. M. McGraw, W.S. Yerazunis, K.T. Lau, and D. Diamond, "Autonomous field-deployable device for the measurement of phosphate in natural water" Proc. of SPIE, Vol. 6755, Sept. 2007, 67550L1-67550L8.