International Journal of Environmental & Analytical Chemistry · 2022 · 10 citations · 55 references
Natural SciencesChemical EngineeringChemistryAnalytical ChemistryElemental AnalysisSpectroscopyAtomic Absorption SpectroscopyAtomic SpectroscopyEnvironmental AnalysisEnvironmental Analytical ChemistryTrace AnalysisTrace Element ChemistryAnalytical Detection Of Organic PollutantsCloud PointCloud Point ExtractionConditionsCopper ChemistryGraphite Furnace Atomic Absorption SpectrometryGraphite Furnace Atomic Absorption SpectroscopyTrace Metal Speciation
A novel environmentally friendly rapid cloud point extraction at room temperature coupled to graphite furnace atomic absorption spectroscopy (RT-CPE-GFAAS) for Copper (II) traces quantification was developed. Were found the most optimal conditions for the instant surfactant rich phase of Triton X-100 formation and the extraction of Copper (II) as a complex with 6,7-dihydroxy-2-phenyl-4-methylbenzopyrylium perchlorate (DHMPhB) at room temperature immediately: addition of 0.5 mol L−1 H2SO4 solution to pH 4.5; 0.15 mol L−1 ammonium benzoate; 1.5 · 10–4 mol L−1 DHMPhB and 1 v/v.% Triton X-100. As a diluent for surfactant rich phase was used 2-propanol. The calibration plot constructed under the optimal conditions is linear in the range of Copper (II) concentrations of 0.31–127 μg L−1, and the limit of quantification and limit of detection are 0.31 and 0.09 μg L−1 respectively. The developed RT-CPE-GFAAS technique was successfully used to determinate Copper (II) traces in water samples with affordable results.
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