Polypyrrole modified electrode prepared by electropolymerization of pyrrole in the presence of a complexing ligand, benzo-15-crown-5 (B15C5), was prepared and investigated as a La3+- selective electrode in acetonitrile. ...

Crown ethers are macrocyclic polyethers which form stable selective complexes with suitable cations. The ability of crown ethers to form stable complexes with cations has spurred interest in these compounds [1]. Various ...

the equilibruim costant and the thermodinamic parameters for compex formation of benzo-15crown-5 and phenylaza-15-crown-5 with La3+ cation have been determined by conductivity in acetonitrile.

زرشک بیدانه (Berberis vulgaris L. var. asperma) یکی از معدود گیاهان زراعی است که فقط در کشور ایران و جنوب استان خراسان کشت می شود. منشا این گونه مشخص نیست و هیچگونه مطالعه ای در زمینه شناسایی روابط خویشاوندی آن با دیگر ...

A poly (vinyl chloride)-based membrane of 2,9-dihydroxy-1,10-diphenoxy-4,7-dithiadecane

(C20H26O4S2) as a neutral carrier was prepared and investigated as an Y3+-selective electrode. Effects of various plasticizers ...