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http://dx.doi.org/10.9713/kcer.2011.49.3.348

Colorimetric Detection of Chelating Agents Using Polydiacetylene Vesicles  

Park, Moo-Kyung (Department of Chemical and Biological Engineering, Korea University)
Kim, Kyung-Woo (Department of Chemical and Biological Engineering, Korea University)
Ahn, Dong-June (Department of Chemical and Biological Engineering, Korea University)
Oh, Min-Kyu (Department of Chemical and Biological Engineering, Korea University)
Publication Information
Korean Chemical Engineering Research / v.49, no.3, 2011 , pp. 348-351 More about this Journal
Abstract
In this research, we developed a sensor system which can easily detect several chelating agents using polydiacetylene(PDA) vesicles. In comparison to other sensors, PDA based sensor has several advantages. First, detection method is much simpler and faster because it does not require any labeling step in the experiment procedure. Second, significant color-transition from blue to red based upon external stimulus allows us the detection by naked eyes. Finally, it is also possible to perform quantitative analysis of the concentration of the chelating agent by measuring the colorimetric response. In this paper, five types of chelating agents were used, including EDTA, EGTA, NTA, DCTA and DTPA. Among them, EDTA and DCTA triggered especially strong color-transition. In conclusion, this study has led to a successful development of a color transition-based PDA sensor system for easy and rapid detection of chelating agents.
Keywords
Label-Free; Sensor; Polydiacetylene; Colorimetric Detection; Chelating Agent;
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Times Cited By KSCI : 2  (Citation Analysis)
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