Gadolinium(III) ion selective sensor using a new synthesized Schiff's base as a sensing material

Abstract According to a solution study which showed a selective complexation between N , N′ -bis(methylsalicylidene)-2-aminobenzylamine (MSAB) and gadolinium ions, MSAB was used as a sensing element in construction of a gadolinium(III) ion selective electrode. Acetophenon (AP) was used as solvent mediator and sodium tetraphenyl borate (NaTPB) as an anion excluder. The electrode showed a good selectivity towards Gd(III) ions over a wide variety of cations tested. The constructed sensor displayed a Nernstian behavior (19.7 ± 0.3 mV/decade) in the concentration range of 1.0 × 10 − 6 to 1.0 × 10 − 2  mol L − 1 with detection limit of 5.0 × 10 − 7  mol L − 1 and a short response time (

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