Simultaneous preconcentration of copper, zinc, cadmium, and nickel in water samples by cloud point extraction using 4-(2-pyridylazo)-resorcinol and their determination by inductively coupled plasma optic emission spectrometry

Silva, Edson Luiz; Roldan, Paulo dos Santos; Giné, María Fernanda

doi:10.1016/j.jhazmat.2009.06.127

Cited by 238 publications

(65 citation statements)

References 44 publications

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“…Due to the low concentration of these metals in the environmental and biological samples and interfering effects, a preconcentration/separation technique is generally necessary prior to the determination. For this purpose, various analytical procedures have been used, such as adsorption on activated carbon [3,4] co-precipitation [5,6] column extraction [7,8] ion-selective electrode [9,10] liquid-liquid extraction (LLE) [11] and cloud-point extraction (CPE) [12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

A New Thioamide Derivative for Separation and Preconcentration of Multi Elements in Aquatic Environment by Cloud Point Extraction

Hassanien¹,

Hassan²,

Mortada³

et al. 2011

AJAC

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Section: Introductionmentioning

confidence: 99%

A New Thioamide Derivative for Separation and Preconcentration of Multi Elements in Aquatic Environment by Cloud Point Extraction

Hassanien¹,

Hassan²,

Mortada³

et al. 2011

AJAC

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“…Atypical Cloud point experiment required the following steps: 25mL solution contain analyte ions, 0.1 % Triton X-114 for Al 3+ ion and 0.27 mM IDPI was adjusted to related pH 3.5, was adjusted to related pH 3.5, the mixture shaken for 15 min and left to stand in a thermostated bath at 50°C for 20 min to Al 3+ ion, high viscosity Cloud point formed ,the bulk aqueous phase was easily decanted .The remaining micellar phase was dissolved in ethanol and then the ion content was readily evaluated by UV-Vis spectrophotometry at λmax for complex λ=539nm for Al 3+ ion, as well as calculated distribution ratio values by spectrophotometric method [27]. With dependance on Calibration Curve Figure 1.…”

Section: Spectrophotometric Titrationsmentioning

confidence: 99%

Cloud Point Extraction as a Simple Preparation for Trace Amount of Aluminium by New Ligand 2-(3- indolyl) - 4,5 di Phenyl Imidazole(IDPI), after Determination by Flame Atomic Absorption Spectrometry in Real Samples

Hakimelahi¹,

Niknam²

2017

Eurasian J Anal Chem

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2-(3-indolyl) -4,5 di phynyl imidazole(IDPI), was used as a complexing agent in cloud point extraction for the first time and applied for selective pre-concentration of trace amounts of Aluminium. The method is based on the extraction of Aluminium at pH 3.5 by using nonionic surfactant T-X114 and 2-(3-indolyl) -4,5 di phenyl imidazole.(IDPI) as a chelating agent. The adopted concentrations for IDPI, Triton X-114 and HNO3, bath temperature, centrifuge rate and time were optimized. Linearity for Al was obeyed in the range of Al 3+ ion 0.2-20.0 ng mL -1 . The Detection Limit (n=10) 0.013(µg.mL -1 ) for Aluminium ion, and along with enrichment factor of 37 for Aluminium ion, RSD % (n=5) 1.3(µg.mL -1 ) for Aluminium ion was achieved. The high efficiency of cloud point extraction to carry out the determination of analytes in complex matrices was demonstrated. The proposed method was successfully applied to the ultra-trace determination of aluminium in real samples.

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“…Determination of cadmium trace elements in water is still one of the tedious job in analytical chemistry and it requires highly sensitive and accurate analytical methods [3]. Various methods based on solvent extraction [4], ion exchange [5], membrane filtration [6], cloud point extraction [7][8][9], coprecipitation [10,11] and solid phase extraction [12,13] have been developed for the pre-concentration of trace elements in water samples.…”

Section: Introductionmentioning

confidence: 99%

Separation and Determination of Cadmium(II) in Wastewater by Bisolvent of Ester and Ionic Liquid Flotation System

Hou¹,

Li²,

Zhao³

2018

Asian J. Chem.

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In this study, the flotation technology was used to separate and enrich the heavy metal Cd 2+ ions. Based on literature, it was found that Cd 2+ could form CdI4 2-with KI in solution and then (RhB)2(CdI4) was occurred when CdI4 2-was mixed with rhodamine B. This ternary associate was determined by bisolvent of ester and ionic liquid flotation system. Ionic liquid was [Bmim]BF4, the optimal amount of acetic acid, potassium iodide and rhodamine B was 8, 20 and 4 mL, respectively. The best removal efficiency obtained at a flotation time of 15 min with air flow rate of 30 mL/min and 38 % mass fraction of (NH4)2SO4 solution was 95.68 %. The experimental data indicated that the ionic liquid have more excellent function than the traditional organic solvents.

show abstract

Simultaneous preconcentration of copper, zinc, cadmium, and nickel in water samples by cloud point extraction using 4-(2-pyridylazo)-resorcinol and their determination by inductively coupled plasma optic emission spectrometry

Cited by 238 publications

References 44 publications

A New Thioamide Derivative for Separation and Preconcentration of Multi Elements in Aquatic Environment by Cloud Point Extraction

A New Thioamide Derivative for Separation and Preconcentration of Multi Elements in Aquatic Environment by Cloud Point Extraction

Cloud Point Extraction as a Simple Preparation for Trace Amount of Aluminium by New Ligand 2-(3- indolyl) - 4,5 di Phenyl Imidazole(IDPI), after Determination by Flame Atomic Absorption Spectrometry in Real Samples

Separation and Determination of Cadmium(II) in Wastewater by Bisolvent of Ester and Ionic Liquid Flotation System

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