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Portable integrated micro-fluidic platform for the monitoring and detection of nitrite

Czugala, Monika and Fay, Cormac and O'Connor, Noel E. and Corcoran, Brian and Benito-Lopez, Fernando and Diamond, Dermot (2013) Portable integrated micro-fluidic platform for the monitoring and detection of nitrite. Talanta, 116 . pp. 997-1004. ISSN 1873-3573

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Abstract

A wireless, portable integrated micro-fluidic platform is proposed and applied for the determination of nitrite anions in water. The colourimetric analysis of nitrite is based on the Griess reagent, and the colour intensity of nitrite Griess reagent complex is detected using a low cost Paired Emitter Detector Diode technique. The micro-fluidic device employed a photoswitchable micro-valve, controlled by white light and generated using a light emitting diode. This low-cost and low-power detector exhibited very low limits of detection (34 ± 0.1 μg L-1). Freshwater samples were analysed and the results were compared to those generated with a conventional UV-Vis spectrophotometer showing good agreement. The suitability of the analyser for the precise and continuous measurement of samples was established. In addition, its small size and low weight offered the advantage of portability, while its data logging capabilities allowed for independent nitrite monitoring. Moreover, integration of a wireless communication device allowed for the instrument to be controlled and results to be downloaded remotely.

Item Type:Article (Published)
Refereed:Yes
Subjects:Physical Sciences > Analytical chemistry
Physical Sciences > Photochemistry
Physical Sciences > Electronic circuits
Computer Science > Information technology
Physical Sciences > Chemical detectors
Engineering > Electronic engineering
Engineering > Environmental engineering
Engineering > Biomedical engineering
Engineering > Mechanical engineering
Physical Sciences > Environmental chemistry
Physical Sciences > Detectors
Engineering > Electronics
Physical Sciences > Photonics
Physical Sciences > Chemistry
DCU Faculties and Centres:Research Initiatives and Centres > INSIGHT Centre for Data Analytics
Research Initiatives and Centres > National Centre for Sensor Research (NCSR)
Publisher:Elsevier
Official URL:http://www.sciencedirect.com/science/article/pii/S0039914013006310
Copyright Information:© 2013 Elsevier
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:European Framework Programme 7, Science Foundation Ireland
ID Code:20389
Deposited On:22 Jan 2015 11:01 by Cormac Fay. Last Modified 20 Jan 2017 14:04

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