Comparative studies of praseodymium(III) selective sensors based on newly synthesized Schiff's bases

Abstract

a b s t r a c tPraseodymium ion selective polyvinyl chloride (PVC) membrane sensors, based on two new Schiff's bases 1,3-diphenylpropane-1,3-diylidenebis(azan-1-ylidene)diphenol (M 1 ) and N,Nbis(pyridoxylideneiminato) ethylene (M 2 ) have been developed and studied. The sensor having membrane composition of PVC: o-NPOE: ionophore (M 1 ): NaTPB (w/w; mg) of 150: 300: 8: 5 showed best performances in comparison to M 2 based membranes. The sensor based on (M 1 ) exhibits the working concentration range 1.0 × 10 −8 to 1.0 × 10 −2 M with a detection limit of 5.0 × 10 −9 M and a Nernstian slope 20.0 ± 0.3 mV decade −1 of activity. It exhibited a quick response time as <8 s and its potential responses were pH independent across the range of 3.5-8.5.The influence of the membrane composition and possible interfering ions have also been investigated on the response properties of the electrode. The sensor has been found to work satisfactorily in partially non-aqueous media up to 15% (v/v) content of methanol, ethanol or acetonitrile and could be used for a period of 3 months. The selectivity coefficients determined by using fixed interference method (FIM) indicate high selectivity for praseodymium(III) ions over wide variety of other cations. To asses its analytical applicability the prepared sensor was successfully applied for determination of praseodymium(III) in spiked water samples.

Preparation and characterization of a novel optical chemical sensor for determination of trace amounts of Praseodymium ion by UV/Vis spectrophotometry

“…Therefore, the monitoring of low and high level of Pr(III) ions in accurate, repeatable and reversible way is of high importance. Nowadays, many instrumental methods have been reported in order to determination of Pr(III) ion in real sample including absorption spectra of 4d electron transitions [7], derivative spectroscopy [8], flotation-spectrophotometric [9], polyvinylchloride (PVC)-membrane electrode [3], PVC-membrane sensor [10][11], resonance light scattering [12], fluorescence enhancement sensor [2], chemiluminescence [13] and some other spectroscopic methods [6,14]. However, all of these techniques usually require proficiency and infrastructure backup.…”

Development of a Composite Cu(II)-Selective Potentiometric Sensor Based on a Thiourea Derivative Symmetric Schiff Base

“…These are condensation products formed by the nucleophilic addition reaction of primary amines with aldehydes and ketones. Schif bases have been resently used in various fields of application such as corrosion inhibitor [45,46], in the structure of dyestuffs and pigments [47], stabilizers increasing the stability of polymers and light stabilizer in thermoplastic resins [48], ion carriers in polymeric structures [49], in the production of anticancer, antimicrobial, antifungal and antioxidant substances [50,51], in the developments of fungicide and insecticide in agriculture [52], in the production of cosmetics [53],in perfume [54] and pharmaceutical industry [55].…”

Potentiometric Sensor Array for Analysis of Complex Rare Earth Mixtures

“…lanthanum and cerium selective sensors were suggested in [8,9] (based on the same trithiane ligand). Ion selective sensors for neodymium [10,11], praseodymium [12], dysprosium [13], etc. are reported.…”