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Ion-exchange Reaction of silver(I) and copper(II) in Optical Sensors Based on Thiaglutaric Diamide

Ion-exchange Reaction of silver(I) and copper(II) in Optical Sensors Based on Thiaglutaric Diamide

Xiaojie Liu, Yu Qin

Anal Sci. 2008 Sep;24(9):1151-6.

PMID: 18781028

Abstract:

Bulk optode membranes based on a recently reported thiaglutaric diamide ionophore were developed for measurements of silver(I) and copper(II) ions in aqueous solutions. The response properties of optical films containing ionophore and chromoionophores with different pK(a) values were investigated at different sample pH. At certain pH the measuring range of the optode can be shifted when choosing different chromoionophores. Optode with ionophore and chromoionophore V exhibited good responses to silver ions from 10(-6)-10(-1) M at pH 5.5. The proposed sensor showed high selectivity, good reproducibility and stability. With a different chromoionophore ETH 5418 the optode could response to copper(II) ions from 10(-6)-10(-2) M.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP125769677	Copper(II) ionophore I		125769-67-7	Price

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