Selective solid-phase extraction of Cu(II) using freshly precipitated lead diethyldithiocarbamate and its spectrophotometric determination
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H. Cesur
Abstract
A new solid-phase extraction method has been developed for the selective extraction of Cu(II) in an aqueous system using freshly precipitated lead diethyldithiocarbamate (Pb(DDTC)2) as a reagent. The method is based on the quantitative replacement of Pb(II) ions in the solid Pb(DDTC)2 phase by Cu(II) ions present in aqueous phase. The obtained solid Cu(DDTC)2 phase was dissolved in chloroform and determined spectrophotometrically at 435 nm. Beer’s law was obeyed over the concentration range of 0.2–5 mg dm−3. The molar absorptivity and the Sandell’s sensitivity coefficients of the solutions were 1.0689 × 104 dm3 mol−1 cm−1 and 0.0060 µg cm−2, respectively. The optimum conditions for each parameter were experimentally determined and possible interferences of various salts were also studied. The method has been validated and applied to determine Cu(II) in various alloys and water samples.
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© 2007 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Determination of potassium in fatty acid methyl esters applying an ion-selective potassium electrode
- Selective solid-phase extraction of Cu(II) using freshly precipitated lead diethyldithiocarbamate and its spectrophotometric determination
- Evaluation of colon cancer elements contents in serum using statistical methods
- Determination of norfloxacin in pharmaceuticals, human serum, and urine using a luminol—dissolved oxygen chemiluminescence system
- Properties of fructosyltransferase from Aureobasidium pullulans immobilized on an acrylic carrier
- Influence of two-phase system composition on biocatalytic properties of β-galactosidase preparations
- Thermal decomposition kinetics of strontium oxalate
- Synthesis and properties of lanthanide(III) complexes with 4-hydroxy-3,5-dimethoxybenzoic acid
- Influence of photoinitiator and curing conditions on polymerization kinetics and gloss of UV-cured coatings
- Interactions in iron gall inks
- Bimolecular reduction of 9-alkyl-3-nitrocarbazoles
- A detailed analysis of volatile constituents of Aquilegia pancicii Degen, a Serbian steno-endemic species
- A one-pot synthesis of 8-amino-1-methoxy-6H-dibenzo[b,d]pyran-6-one
- Magnetically modified bentonite as a possible contrast agent in MRI of gastrointestinal tract
