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- W4386792760 abstract "This research described�new analytical devices for Ag+ and Hg2+ detection using bulk optode technique. The optode containing 25,27-di(benzothiazolyl)-26,28-hydroxycalix[4]arene (CU1) as an ion-selective ionophore, chromoionophore XIV as a lipophilic pH indicator, and KTpClPB as an ion-exchanger was prepared and used as a sensing agent in the proposed devices. The optode sensors responded to Ag+ and Hg2+ by changing the color from blue to yellow. The colorimetric-based detection was carried out by using the proposed paper-based analytical device. A simple fabrication method was performed by simply dropping the cocktail onto the filter paper, and the detection method was easily performed by immersing the paper strip into the sample solutions. �In this platform, the dual detection of Ag+ and Hg2+ in their mixed solutions was achieved by adding EDTA and NaCl as masking agents, respectively. Additionally, to demonstrate a truly instrument-free optode sensor without the need of any electronic equipment, the distance-based detection was proposed by using the thread-based analytical device. The optode nanosphere with 110 nm in diameters was successfully prepared and incorporated onto the surface of polyester thread by a simple manual pipetting, and the detection method was easily performed by repeatedly dropped sample solutions onto the thread. In this platform, the Hg2+ detection on thread-based device was exhibited. The distances of the color change correlated to the Hg2+ concentrations in sample solutions, so the detection method was easily performed by measuring the length of the color change along the thread with a ruler. Finally, the proposed devices were successfully applied to determine the amount of Ag+ and Hg2+ in real samples, and the results were in agreement with the values obtained from ICP-OES." @default.
- W4386792760 created "2023-09-16" @default.
- W4386792760 creator A5010802140 @default.
- W4386792760 date "2023-09-15" @default.
- W4386792760 modified "2023-09-26" @default.
- W4386792760 title "Development of sensing platforms using bulk optode technique for detection of silver and mercury ions" @default.
- W4386792760 doi "https://doi.org/10.58837/chula.the.2019.109" @default.
- W4386792760 hasPublicationYear "2023" @default.
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