Spectrophotometric Determination of Tellurium(IV) by Extraction with Tributylphosphate

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...

Selective extraction spectrophotometric determination

Spectrophotometric determination of palladium by extraction of its

A new method is proposed for naphthalene extraction and spectrophotometric determination of palladium at the ppm level with chinoform. The method is based on the formation of a yellow complex which is extractable by molten naphthalene and on the dissolution of the extract in dioxane. The yellow solution follows Beer's law at 462 nm over ~he range of 7 to 140 ~g of palladium per 10 ml of dioxane...

Solvent Extraction and Spectrophotometric Determination of Magnesium by Paratoly l-2-Thenohydroxamic Acid and Quinalizarin

Magnesium is extracted with a chloroform solution of N-p-tolyl-2- thenohydroxamic acid (PTTHA) from aqueous solution of pH 9.5 .Mg-PTTHA complex is colourless and the colour is developed by adding quinalizarin into the extract. lmax and e of the complex are 590nm and 2.8´103 Lmol -1cm-1respectively.Most common  ions do not interfere in the determination of magnesi...

EXTRACTION-SPECTROPHOTOMETRIC DETERMINATION OF BENZOCAINE BY DICYCLOHEXYL-18-CROWN-6 AND CALMAGITE

A simple and sensitive extraction-spectrophotometric method for rapid and accurate determination of benzocaine in pure and dosage forms was developed. Benzocaine was effectively extracted as a 1:1 ion pair complex with dicyclohexyl-18-crown-6 and calmagite in acidic media into chloroform, followed by spectrophotometric determination at 486 nm. Molar absorptivity of the ternary complex at this w...