The preparation of a fine tip calcium ion selective electrode

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