Lab-in-a-Phone: Smartphone-Based Portable Fluorometer for pH Measurements of Environmental Water

Hossain, A; Canning, J; Ast, S; J. Rutledge, P; Li Yen, T; Jamalipour, A

Lab-in-a-Phone: Smartphone-Based Portable Fluorometer for pH Measurements of Environmental Water

Hossain, A Canning, J

Ast, S J. Rutledge, P Li Yen, T Jamalipour, A

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Publication Type:: Journal Article
Citation:: IEEE Sensors Journal, 2015, 15 (9), pp. 5095 - 5102
Issue Date:: 2015-09-01

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Field	Value	Language
dc.contributor.author	Hossain, A	en_US
dc.contributor.author	Canning, J https://orcid.org/0000-0001-8281-7783	en_US
dc.contributor.author	Ast, S	en_US
dc.contributor.author	J. Rutledge, P	en_US
dc.contributor.author	Li Yen, T	en_US
dc.contributor.author	Jamalipour, A	en_US
dc.date.issued	2015-09-01	en_US
dc.identifier.citation	IEEE Sensors Journal, 2015, 15 (9), pp. 5095 - 5102	en_US
dc.identifier.issn	1530-437X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/118686
dc.description.abstract	© 2001-2012 IEEE. A novel portable fluorometer combining the attributes of a smartphone with an easy-fit, simple and compact sample chamber fabricated using 3-D printing has been developed for pH measurements of environmental water in the field. A color filter attached over the camera white light light-emitting diode selects an excitation band centered around \lambda \sim 450 nm with a 3-dB bandwidth, \Delta \lambda \sim 21 nm. An application-specific, temperature-stable probe based on the 4-aminonaphthalimide fluorophore was synthesized to absorb at this wavelength while emitting in the green region of the visible spectrum. The green emission is readily detected using the smartphone camera and a simple red-green-blue Android application. Suppression of the green emission increases with increasing pH enabling a straightforward pH sensor. The system was calibrated against a commercial spectrofluorometer and pH measurements were taken at various locations around Sydney. The results were then compared directly with those obtained using conventional electrode-based measurements. The data can be stored in the phone's available memory or transmitted by phone back to base for further real-time analysis.	en_US
dc.relation.ispartof	IEEE Sensors Journal	en_US
dc.relation.isbasedon	10.1109/JSEN.2014.2361651	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Analytical Chemistry	en_US
dc.title	Lab-in-a-Phone: Smartphone-Based Portable Fluorometer for pH Measurements of Environmental Water	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.citation.volume	15	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	0205 Optical Physics	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	closed_access	*
pubs.issue	9	en_US
pubs.publication-status	Published	en_US
pubs.volume	15	en_US

Abstract:

© 2001-2012 IEEE. A novel portable fluorometer combining the attributes of a smartphone with an easy-fit, simple and compact sample chamber fabricated using 3-D printing has been developed for pH measurements of environmental water in the field. A color filter attached over the camera white light light-emitting diode selects an excitation band centered around \lambda \sim 450 nm with a 3-dB bandwidth, \Delta \lambda \sim 21 nm. An application-specific, temperature-stable probe based on the 4-aminonaphthalimide fluorophore was synthesized to absorb at this wavelength while emitting in the green region of the visible spectrum. The green emission is readily detected using the smartphone camera and a simple red-green-blue Android application. Suppression of the green emission increases with increasing pH enabling a straightforward pH sensor. The system was calibrated against a commercial spectrofluorometer and pH measurements were taken at various locations around Sydney. The results were then compared directly with those obtained using conventional electrode-based measurements. The data can be stored in the phone's available memory or transmitted by phone back to base for further real-time analysis.

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http://hdl.handle.net/10453/118686