Abstract
The presented study investigates the application of MnO2/3MgO nanocomposite, as a new sorbent for solid phase extraction and determination of trace amounts of Pb2+ and Cu2+ from various samples using flame atomic absorption spectrometry. After extraction, the analytes were desorbed using 0.01 M ethylenediaminetetraacetic acid. The effects of various parameters were studied and optimized. Under optimized experimental conditions the linear dynamic ranges for Cu2+ and Pb2+ were 10‒900 and 30‒900 μg/L, respectively, with a preconcentration factor of 20. The detection limits of Cu2+ and Pb2+ were 4 and 11 μg/L, respectively, and relative standard deviations for eight determinations of 100 μg/L were 3.6 and 3.8% for Cu2+ and Pb2+, respectively. The method was successfully applied for determination of copper and lead in mushrooms, rice, tap water and refinery wastewater with good spike recoveries ranging between 95‒106%.
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01 June 2018
In Figure 4: should read “Nitric acid (0.1 M)” instead of “Nutric acid (0.1 M)”
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Khayatian, G., Moradi, M. & Hassanpoor, S. MnO2/3MgO Nanocomposite for Preconcentration and Determination of Trace Copper and Lead in Food and Water by Flame Atomic Absorption Spectrometry. J Anal Chem 73, 470–478 (2018). https://doi.org/10.1134/S1061934818050088
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DOI: https://doi.org/10.1134/S1061934818050088