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Analysis of phosphate in wastewater using an autonomous microfluidics-based analyser

Cleary, John and Slater, Conor and Diamond, Dermot (2009) Analysis of phosphate in wastewater using an autonomous microfluidics-based analyser. In: ICEST 2009 - International Conference on Environmental Science and Technology, 28-30 April 2009 , Rome, Italy. ISBN 2070-3724

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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.

Item Type:Conference or Workshop Item (Paper)
Event Type:Conference
Refereed:Yes
Subjects:Physical Sciences > Analytical chemistry
Physical Sciences > Chemical detectors
Physical Sciences > Environmental chemistry
Physical Sciences > Chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Initiatives and Centres > National Centre for Sensor Research (NCSR)
Research Initiatives and Centres > CLARITY: The Centre for Sensor Web Technologies
Published in:Proceedings of World Academy of Science, Engineering and Technology. 52. World Academy of Science, Engineering and Technology. ISBN 2070-3724
Publisher:World Academy of Science, Engineering and Technology
Official URL:http://www.waset.org/journals/waset/v52.php
Copyright Information:© 2009 WASET.ORG
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Enterprise Ireland, Science Foundation Ireland
ID Code:2969
Deposited On:18 Mar 2009 16:16 by John Cleary. Last Modified 09 Jul 2009 09:30

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