Analysis of Strontium(II) Ion by Turbidimetric Method Using Schiff Base Derivative

المجلة: Asian Journal of Chemistry

سنة النشر: 2017

تاريخ النشر: 2017-03-10

A sensitive and selective batching turbidity method was proposed for the quick determination of strontium(II) ion in analytical sample using Schiff base derivative. The proposed method was supported by the viscose cloud formation by reacting strontium(II) ion with Schiff base derivative and sodium dodecyl sulfate surfactant at pH 4.06. Linearity was observed from 0.5-3.0 μg mL-1 with detection point of accumulation of 0.057 μg mL-1. Recovery and relative error values of precision and accuracy of the method were found to be RSD % 4.38 %. The proposed method was applied successfully in the determination of strontium(II) in different natural samples.

Liquid-liquid extraction of Cobalt (II) ion using new azo derivative and its analytical applications

المجلة: AIP Conference Proceedings

سنة النشر: 2022

تاريخ النشر: 2022-12-02

The study of solvent extraction of Cobalt (II) ion by a new azo derivative of 8-hydroxyquinolin (DPDQ) had been synthesized. many effected parameters on extraction process was studied such as acidity of medium that founded equal to (pH=10); and ten minutes was enough to the equilibrium of extraction; polarity of solvents was tell us the effective of dielectric constant of solvents on extraction process; interference of some anion and cation that effected on extraction; redox agent effected on metal ion that extracted by ligand in different oxidation state ; optimum metal concentration that used in extraction method; effected of different salt such as sodium chloride ,sodium nitrate &effect of temperature that indicated to the stability of extracted complex in different temperatures & The thermodynamic functions (ΔH, ΔG, ΔS) were calculated its indicated that the reaction between the ligand and the ion metal was exothermic and spontaneous . The extraction stoichiometry was studied using two methods Job's &Molar ratio. It was found to be (M: L) (1:2) the shape of complex was octahedral. The constant of stability of complex in method's mole ratio was calculated. The spectroscopy of UV-visible, F.T.I. R, HNMR,CNMR, and mass were study for both the reagent & complex in organic phase that identification the ligand and complex .Other physical constants such as melting point & conductivity were studied. Some biological & drug were used to extracted cobalt ion from it as applications.