کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
580367 1453149 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solid phase extraction of copper(II) ions using C18-silica disks modified by oxime ligands
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Solid phase extraction of copper(II) ions using C18-silica disks modified by oxime ligands
چکیده انگلیسی
5-Tert-butyl-2-hydroxy-benzaldehyde oxime (L1) and 3,5- di-tert-butyl-2-hydroxy-benzaldehyde oxime (L2) are synthesized and characterized by conventional spectroscopic methods. These ligands are used as modifier of octadecyl silica membrane disks for separation and pre-concentration of trace amounts of copper(II) ions, followed by sulfuric or nitric acid elution and flame atomic absorption spectrometric (FAAS) determination. The effect of parameters influencing the extraction efficiency i.e. pH of sample solutions, amount of the oxime, type and volume of eluent, sample solution and eluent flow rates were evaluated. Under optimum experimental conditions, the maximum capacity of the membrane disks modified by 6 mg of L1 or 4 mg of L2 was found to be 284.7 (±2.8) μg of copper and 382.5 (±3.1) μg of copper, respectively. The detection limits of the presented methods are 0.29 ng ml−1 for L1 and 0.25 ng ml−1 for L2. The enrichment factors are greater than 400 for both cases. These methods were successfully applied to the extraction, recovery and detection of copper in different water samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 179, Issues 1–3, 15 July 2010, Pages 289-294
نویسندگان
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