Ion Pair Dispersive Liquid-Liquid Microextraction for the Determination of Trace Amounts of Copper(II) in Soil, Multivitamin Tablet, Tea and Water Samples Using Flame Atomic Absorption Spectrometry
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ANALCH-5-1_002
تاریخ نمایه سازی: 16 بهمن 1401
Abstract:
Ion pair dispersive liquid- liquid microextraction (IP-DLLME) method combined with flame atomic absorption spectrometry was proposed for the determination of trace amounts of copper(II). By using pyrocatechol violet as chelating agent and cetyltrimethyl ammonium bromide as an ion pairing agent, the trace amount of copper(II) was extracted in chloroform. The factors influencing the formation copper-ligand complex and the extraction efficiency such as, sample pH, extraction time, type and volume of extraction solvent and dispersive solvent, ion pair and ligand concentration were optimized. Under optimum experimental conditions, the enhancement factor of ۱۰.۰ was obtained from only ۵.۰ ml of aqueous phase. The linear dynamic range and the detection limit were ۶.۰ - ۱۰۰ μg l-۱ and ۳.۷ mg l-۱, respectively. The relative standard deviation for ten replicate determinations of ۴۰.۰ µg l-۱ of Cu۲+ was ۱.۹ %. Developed method was successfully applied for determination of copper in soil, multivitamin tablet, tea and water samples with good spike recoveries.
Keywords:
Ion pair dispersive liquid- liquid microextraction , Copper(II) determination , Pyrocatechol violet , Flame atomic absorption spectrometry
Authors
Gholamreza Khayatian
pasdaran street
Mohammad Hassanpour
Department of Chemistry, University of Kurdistan sanandaj, IRAN
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