The preparation of a fine tip calcium ion selective electrode

Nguyen Van Dat * , Huynh Lien Huong , Huynh Thanh Tuan , Ho Quoc Phong , Do Vo Anh Khoa , Nguyen Thanh Dat and Ronny Purwadi

* Corresponding author (nvdat@ctu.edu.vn)

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Received: 25 Aug 2018
Revised: 22 Dec 2018
Accepted: 29 Nov 2019
Published: 31 Mar 2020
DOI: 10.22144/ctu.jen.2020.006
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Nguyen, V. D., Huynh, L. H., Huynh, T. T., Ho, Q. P., Do, V. A. K., Nguyen, T. D., & Ronny, P. (2020). The preparation of a fine tip calcium ion selective electrode. CTU Journal of Innovation and Sustainable Development , 12(1), 45-49. https://doi.org/10.22144/ctu.jen.2020.006
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Vol. 12 No. 1 (2020)

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Abstract

The purpose of this present study is to make a fine tip Ca2+—selective electrode. Detection limit is found at pCa around 7.5 in Ca2+ buffer solution. The changes in EMF induced between two solutions for 10—fold change in Ca2+ concentration are close to 30 mV. This electrode characteristics were found for single—barrelled microelectrodes of 72.6 nm diameter tip and an internal filling solution buffered for pCa of 6.
Keywords: cocktail A, detection limit, ETGA, ISE, silanization

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