Micelle Mediated Extraction and Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Copper in Differ
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Micelle Mediated Extraction and Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Copper in Different Mushroom Species Yeliz Camcıa, Abdullah Taner Bişginb, *, Yavuz Sürmea, Mustafa Uçana, and İbrahim Narinc aDepartment
of Chemistry, Faculty of Arts and Sciences, Niğde Ömer Halisdemir University, Nigde, 51100 Turkey bUlukışla Vocational School, Niğde Ömer Halisdemir University, Nigde, 51900 Turkey c Faculty of Pharmacy, Erciyes University, Kayseri, 38039 Turkey *e-mail: [email protected] Received March 23, 2018; revised May 8, 2018; accepted March 6, 2020
Abstract—A micelle mediated separation and preconcentration method for flame atomic absorption spectrophotometric (FAAS) determination of Cu was developed. The method is based on complex formation between Cu and 1-(2-pyridylazo)-2-naphthol and cloud point extraction with Tergitol NP-7 surfactant prior to FAAS determination. The parameters affecting quantitative extraction of copper, including pH, surfactant and ligand concentrations, incubation time and temperature, were examined and optimized. Under optimum conditions, interference effects of other ions were studied, and tolerance ratios of interference ions were given. Under the optimal conditions, detection and quantitation limits were found as 3 and 8 μg/L, respectively. Linear dynamic range for Cu2+ was determined to be 0.13–1.5 μg/mL. Relative standard deviations were below 6% throughout the experiments. Enhancement factor was determined as 25. Applicability of the method was proved by analysis of standard reference materials. The developed method was applied to determine trace copper contents in different mushroom species. Keywords: cloud point extraction, 1-(2-pyridylazo)-2-naphthol (PAN), copper, flame atomic absorption spectrophotometry (FAAS), Tergitol NP-7, mushroom DOI: 10.1134/S1061934820090166
Copper is an essential metal and has an important and effective role in metabolism of lipids and carbohydrates but it can be toxic and harmful at high concentrations for all living organisms, environment and aquatic life [1]. Copper is among the most widely used heavy metals in chemical industry and related technologies. The most toxic and abundant form of cooper metal is Cu2+ ion in the environment [2]. However, waste generation constitutes a significant problem due to environmental concerns [3]. Because of these reasons together with removal and recovery processes, determination and accordingly preconcentration of metal ions are deemed important [4]. Nowadays, developed instrumental analytical devices and techniques can determine trace amount of metal ion at μg/mL and/or ng/mL levels but metal ion determination can be problematic because matrix can consist of different interfering cations, anions and organic molecules [5]. Therefore, it is necessary or mandatory to apply one or more preconcentration procedures to a complex matrix prior to instrumental analysis.
Various analytical separation and preconcentration methods were developed for the determination of trace heavy met
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