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Webcam camera as a detector for a simple lab-on-chip time based approach |
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| Authors: | Wasin Wongwilai Somchai Lapanantnoppakhun Supara Grudpan |
| Institution: | a Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand b Research Laboratory for Development of Analytical Instrumentation, Center for Instrumention and Process, Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand c College of Art, Media and Technology, Chiang Mai University, Chiang Mai 50200, Thailand |
| Abstract: | A modification of a webcam camera for use as a small and low cost detector was demonstrated with a simple lab-on-chip reactor. Real time continuous monitoring of the reaction zone could be done. Acid-base neutralization with phenolphthalein indicator was used as a model reaction. The fading of pink color of the indicator when the acidic solution diffused into the basic solution zone was recorded as the change of red, blue and green colors (%RBG.) The change was related to acid concentration. A low cost portable semi-automation analysis system was achieved. |
| Keywords: | Webcam camera Detector Lab-on-chip Phenolphthalein Acid-base neutralization Acetic acid assay Vinegar |
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