Article info.

ABSTRACT

Received 25 Aug 2018
Revised 22 Dec 2018

Accepted 31 Mar 2020

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 electromotive force 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, EGTA, ISE, silanization

Cited as: Dat, N.V., Tuan, H.T., Dat, N.T.,  Phong, H.Q., Huong, H.L., Hien, O.T.M.and Purwadi, R., 2020. The preparation of a fine tip calcium ion selective electrode. Can Tho University Journal of Science. 12(1): 45-49.