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Title: Comparison of some modern IT equipment as detectors for microfluidic paper-based determination of phosphate
Authors: Wasin Wongwilai
B. Manori Jayawardane
Spas D. Kolev
Kate Grudpan
Ian D. McKelvie
Keywords: Biochemistry, Genetics and Molecular Biology
Materials Science
Physics and Astronomy
Issue Date: 1-Jan-2016
Abstract: © 2016, Chiang Mai University. All rights reserved. Modern Information Technology (IT) and communications equipment (mobiles phones, scanners, etc) may all be used as image capture devices for paper-based colorimetric analysis. This paper evaluates the use of a mobile phone, a webcam, a flatbed scanner and a handheld scanner as image capture devices for colorimetric determination of reactive phosphate using microfluidic paper-based analytical devices as the analytical platform. All four image capture devices tested gave similar analytical sensitivity and limits of detection (0.5-0.6 mg L-1 as P), although the handheld scanner and webcam exhibited non-linear responses over the range of concentrations tested, making them less suitable for field applications. The repeatability of the two scanners (<14% RSD) was superior to that of the mobile phone and webcam (ca 25% RSD). The flatbed scanner gave the best overall analytical performance.
ISSN: 01252526
Appears in Collections:CMUL: Journal Articles

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