Extraction with long-chain amines—VColorimetric determination of cobalt with nitroso-R salt

Adam, J.; Přibil, R.

doi:10.1016/0039-9140(71)80114-5

Cited by 20 publications

(7 citation statements)

References 6 publications

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“…Note that extraction of this complex into HHILs does not require any specially introduced counter-ions or salting-out agents. 44 The maximum absorbance of the extracted Nitroso-R salt complex with Co(II) in both HHILs is observed at 490 nm. This agrees well with the value observed for the complex in aqueous solutions.…”

Section: Extraction Of Metal Ions With Water-soluble Reagents Into Hhilsmentioning

confidence: 93%

Hydrophobic–hydrophilic ionic liquids for the extraction and determination of metal ions with water-soluble reagents

2015

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Section: Extraction Of Metal Ions With Water-soluble Reagents Into Hhilsmentioning

confidence: 93%

Hydrophobic–hydrophilic ionic liquids for the extraction and determination of metal ions with water-soluble reagents

2015

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“…Since the extraction of gold(III) with amine compounds has been carried out in the acidic region [9][10][11][12], 0.1 mol L -1 hydrochloric acid was used for the experiments. As a water-miscible organic solvent, acetone was chosen because it has been widely utilized as a disperser solvent for DLLME [18,19,24,25].…”

Section: Extraction Of Gold(iii) With Some Amine Compoundsmentioning

confidence: 99%

“…Liquid-liquid extraction (LLE) is an effective method for the separation and preconcentration of gold(III) [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Amine compounds, including n-trioctylamine [9], n-octylaniline [10], N-phenylbenzylamine [11], and N-n-octylaniline [12], are conveniently utilized for the extraction of gold(III) and other elements. However, there are some problems with the use of LLE, including the large amounts of harmful organic solvents needed, the long extraction time required for quantitative extraction, and difficulty in the treatment of wastewater generated after extraction.…”

Section: Introductionmentioning

confidence: 99%

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A sensitive and selective method for determination of gold(III) based on electrothermal atomic absorption spectrometry in combination with dispersive liquid–liquid microextraction using dicyclohexylamine

Kagaya

Takata

Yoshimori

et al. 2010

Talanta

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A combined method with dispersive liquid-liquid microextraction (DLLME) and electrothermal atomic absorption spectrometry (ETAAS) has been developed for determining gold(III). Dicyclohexylamine, a new extractant for gold(III), showed excellent performance in DLLME. Acetone was indispensable to the quantitative extraction of gold(III), contributing to decrease in hydration, decrease in the difference in the dielectric constants between the supernatant phase and the sedimented phase, and dissolution of a part of chloroform as an extraction solvent to the supernatant phase as well as improvement of dipersibility. In DLLME using a mixture of 1.0mL of acetone and 100microL of chloroform containing 50mmolL(-1) of dicyclohexylamine, gold(III) could be extracted selectively and effectively from 8mL of a sample solution in the presence of iron(III), cobalt(II), nickel(II), copper(II), palladium(II), and platinum(IV) at pH 1. The extracted gold(III) was determinable by ETAAS; the detection limit was 0.002microgL(-1) (three times the standard deviation of the blank values, n=8) as a gold(III) concentration in 8mL of sample solution. The proposed method was applicable to the determination of gold in platinum metal and its alloy as well as effluent without any interference by the matrices.

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“…High molecular weight amines have been firmly established as superior extractante in solvent extraction and a wide range of metal ions have been extracted using these compounds [3], The quaternary ammonium salt, aliquat-336 (tricaprylmethylammonium chloride) has been shown to be a versatile extractant for metals that are capable of existing as complex anionic species [4], Numerous methods have been reported in the use of this reagent [5][6][7][8],…”

Section: Introductionmentioning

confidence: 99%

Radiometric Determination of Trace Amounts of Cadmium by Liquid Scintillation Counting

Devalla

Subramanian

1998

Radiochimica Acta

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Cadmium determination / Substoichiometric isotope dilution analysis / Liquid scintillation counting / Aliquat-336Summary A substoichiometric isotope dilution analysis method is described for the determination of trace amounts of cadmium. The method is based on the extraction of its ion-association complex with substoichiometric amount of aliquat-336 into toluene from 6X10" 3 Μ KI at pH 4.5. The activity of the organic extract containing cadmium-115m was measured by liquid scintillation counting. The counting efficiency of cadmium-115m was found to be 130% and down to 0.1 μg of Cd(II) could be determined in an aqueous phase volume of 50 mL. The method has been successfully applied for the determination of trace amounts of cadmium in city waste incineration ash (CRM 176), zinc metal and zinc-base die-casting samples.

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Extraction with long-chain amines—VColorimetric determination of cobalt with nitroso-R salt

Cited by 20 publications

References 6 publications

Hydrophobic–hydrophilic ionic liquids for the extraction and determination of metal ions with water-soluble reagents

Hydrophobic–hydrophilic ionic liquids for the extraction and determination of metal ions with water-soluble reagents

A sensitive and selective method for determination of gold(III) based on electrothermal atomic absorption spectrometry in combination with dispersive liquid–liquid microextraction using dicyclohexylamine

Radiometric Determination of Trace Amounts of Cadmium by Liquid Scintillation Counting

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