Spectrophotometric Determination of Cadmium(II) Using p,p′‐Dinitro‐SYM‐Diphenylcarbazid in Aqueous Solutions

Bulgariu, Laura; Bulgariu, Dumitru; Sarghie, Ioan

doi:10.1080/00032710500316597

Cited by 10 publications

(3 citation statements)

References 10 publications

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“…20,21 Thus, an efficient extraction system can be prepared in which the differences in the concentration of PEG and the concentration of the inorganic salt concentrations in the two formed phases are large. 20,21 Thus, an efficient extraction system can be prepared in which the differences in the concentration of PEG and the concentration of the inorganic salt concentrations in the two formed phases are large.…”

Section: Resultsmentioning

confidence: 99%

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Cd(II) extraction in PEG(1550)-(NH4)2SO4 aqueous two-phase systems using halide extractants

Bulgariu

2008

JSCS

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The extraction of Cd(II) was studied in an aqueous PEG-(NH 4 ) 2 SO 4 two-phase system, formed from a water-soluble polymer (poly(ethylene glycol), PEG) and an inorganic salt ((NH 4 ) 2 SO 4 ), in the presence of halide ions. In the absence of a suitable extracting agent, Cd(II) remains predominantly in the salt-rich phase of the extraction system. By addition of halide ions as extractants, Cd(II) is extracted into the PEG-rich phase due to the formation of cadmium halide species. The efficiency of the extractants increased in the order: Cl -< Br -< I -. From the distribution coefficients determined as a function of the concentration of the halide ions, the compositions of the extracted species were assumed and the "conditional" extractions constants calculated. The experimental results indicate that the extractability of Cd(II) in such extraction systems depends on the type of Cd(II) halide species (which is mainly determined by the acidity of salt stock solution) and of their stability.

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Section: Resultsmentioning

confidence: 99%

“…19 The Cd(II) content in each phase was determined in duplicate using a prepared calibration graph. The pH values of the (NH 4 ) 2 SO 4 salt stock solutions were measured with a Radelkis pH/ion-meter OK-271 type, equipped with a combined glass electrode.…”

Section: Methodsmentioning

confidence: 99%

Cd(II) extraction in PEG(1550)-(NH4)2SO4 aqueous two-phase systems using halide extractants

Bulgariu

2008

JSCS

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“…For this reason, many methods including differential pulse anodic stripping voltammetry (DPASV) (4,5), flame atomic absorption spectrometry (FAAS) (6), inductively coupled plasma optical emission spectrometry (ICP-OES) (7), potentiometry (8-9), spectrofluorimetry (10, 11), spectrophotometry (12,13) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) (14) have been developed. These methods can provide wide linear range values and good detection limits, but they need to use very expensive devices in the laboratory and a qualified staff for the application.…”

Section: Introductionmentioning

confidence: 99%

Determination of Cd(II) Ions by using Cyclodextrin Based Polymeric Fluorescence Sensor

Çubuk

Yılmaz

Yetimoğlu

et al. 2017

Journal of the Turkish Chemical Society, Section A: Chemistry

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Abstract:In this study, Cd(II) ion was determined using a cyclodextrin-based polymeric fluorescence sensor prepared by UV-curing technique. The effects of several parameters such as pH, time, and coexisting ions on the fluorescence intensity were also examined. The excitation and emission wavelengths were found to be 374 nm and 422 nm, respectively. The measurement range was in the range of 4.45x10 -9 mol L -1 to 4.45x10 . In addition, sensor membrane was selective which was not influenced by common coexisting metal ions. The concentrations of the foreign ions such as Pb(II), Co(III), Ag(I), Zn(II), Cu(II), Cr(III) are 1000-fold higher than Cd(II) ions. Besides the prepared polymeric fluorescence sensor was successfully implemented to the determination of Cd(II) ions in biscuit and tap water samples.

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Extraction of metal ions in aqueous polyethylene glycol–inorganic salt two-phase systems in the presence of inorganic extractants: Correlation between extraction behaviour and stability constants of extracted species

Bulgariu

2008

Journal of Chromatography A

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Spectrophotometric Determination of Cadmium(II) Using p,p′‐Dinitro‐SYM‐Diphenylcarbazid in Aqueous Solutions

Cited by 10 publications

References 10 publications

Cd(II) extraction in PEG(1550)-(NH4)2SO4 aqueous two-phase systems using halide extractants

Cd(II) extraction in PEG(1550)-(NH4)2SO4 aqueous two-phase systems using halide extractants

Determination of Cd(II) Ions by using Cyclodextrin Based Polymeric Fluorescence Sensor

Extraction of metal ions in aqueous polyethylene glycol–inorganic salt two-phase systems in the presence of inorganic extractants: Correlation between extraction behaviour and stability constants of extracted species

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