Spectrophotometric determination of nickel with 2-thenoyltrifluoroacetone using synergistic extraction

Spectrophotometric Determination of Nickel with Chlorophosphonazo-III

The optimum conditions for spectrophotometric method for the determination of Ni with chlorophosphonazo-III (CPA-III) were established and the nickel content in water samples has been successfully determined. In a pH 5.5 acetic acid-sodium acetate buffer medium, CPA-III and Ni formed a 1:3 green blue complex and the maximum absorption wavelength of the complex is at 620 nm. Ni content in a rang...

Extraction-spectrophotometric Determination of Nickel at Microgram Level in Water and Wastewater Using 2-[(2-mercaptophenylimino)methyl]phenol

An extraction-spectrophotometric method for determination of nickel at sub ppm level using 2[(2-mercaptophenylimino)methyl]phenol (MPMP) as the new extractant is described. The reagent reacts with nickel(II) at pH > 10 and form a 1:2 brown complex, which is extracted into chloroform. The complex has a maximum absorption at 421 nm with the molar absorptivity of 2.41 × 10 M cm. Beer’s law is obey...

Extraction - Spectrophotometric Determination of Palladium with Tetrabutyl Ammonium Iodide

A sensitive and selective extraction - spectrophotometric method for the determination of trace amounts of palladium is reported. The method is based on quantitative extraction of brownish tetrabutylammoium tetraiodopalladium (II) ion pair into a small valume of chloroform at pH 1.3-12.0, followed by spectrophotometric measurements. The Beer's law is obeyed over the range 0.02-1.09 <em...

Cloud point extraction, preconcentration and spectrophotometric determination of nickel in water samples using dimethylglyoxime

Article history: Received June 25, 2012 Received in Revised form November 6, 2012 Accepted 30 November 2012 Available online 30 November 2012 A new and simple method for the preconcentration and spectrophotometric determination of trace amounts of nickel was developed by cloud point extraction (CPE). In the proposed work, dimethylglyoxime (DMG) was used as the chelating agent and Triton X-114 w...

Selective extraction spectrophotometric determination