Spectrophotometric Determination of Copper, Cobalt, Nickel, and Tellurium after Extraction with Morpholine-4-carbodithioate into Molten Naphthalene
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چکیده
منابع مشابه
Spectrophotometric determination of traces of platinum with 5-chloro-2-hydroxythiobenzhydrazide after extraction into molten naphthalene.
Platinum(IV) can be determined spectrophotometrically with 5-chloro-2-hydroxythiobenzhydrazide on extraction into molten naphthalene from the aqueous phase with pH 2.2-6.0. Beer's law is obeyed in the concentration range 1.0-7.0 microg cm(-2) of Pt(IV) in 4-methyl-2-pentanone solution at 680 nm. The molar absorptivity and Sandell sensitivity are found to be 2.40 x 10(4) L mol(-1) cm(-1) and 8.0...
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A method was developed for the determination of zinc(II) dimethyldithiocarbamate by converting it into the copper(II) dithiocarbamate complex, which is then extracted into molten naphthalene. The absorbance is measured at 430 nm versus a reagent blank. Beer's law is obeyed for concentrations of 0.63 x 10(-3) to 17.2 x 10(-3) g/L in the final solution. The method is sensitive and was applied to ...
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A method for the simultaneous spectrophotometric determination of nickel, cobalt and copper based on theformation of their complexes with 2-(2-Thiazolylazo)-p-Cresol (TAC) in micellar media of Triton X-100 isproposed. The absorbance spectra were recorded in the range of 500 to 800 nm. The linear concentrationrange for nickel, cobalt and copper in solution calibration sets were 0.05–1.80, 0.10–6...
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A selective spectrophotometric method has been developed for the determination of cobalt after extraction of its 2-methoxyethyl xanthate complex into molten naphthalene. Cobalt reacts with this xanthate in the ratio of 1 : 2 (metal : ligand ratio) in a pH range of 3.5-9.2 and over an acid range of 2.5-7.0 M. It absorbs strongly at 355 nm. Beer's law is obeyed over the concentration range of 2.5...
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Mercury is quantitatively retained with 1, 5-diphenylcarbazone (DPC) on microcrystallinenaphthalene in the pH range 6.5-8.5 from a large volume of aqueous solutions of various samples.After filtration, the solid mass consisting of the mercury complex and naphthalene was dissolvedin 5.0 mL of dimethylformamide (DMF) and mercury was determined by spectrophotometricmethod at 542 nm against the rea...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1981
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.54.3178