کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7703675 | 1496870 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ionic liquid mediated extraction, assisted by ultrasound energy, of available/mobilizable metals from sediment samples
ترجمه فارسی عنوان
استخراج مایع یونی مایع، با کمک انرژی اولتراسوند، از فلزات قابل دسترس / قابل جذب از نمونه های رسوب استفاده می شود
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کلمات کلیدی
استخراج، فلزات، رسوبات، مایع یونی، انرژی التراسونیک،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
چکیده انگلیسی
A new extraction method for metals from sediment samples was developed. In this procedure, the chelating agent EDTA was combined with a minimal amount of the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (Bmim[BF4]), assisted by ultrasound energy. The available analytes -Cd, Cr, Cu, Ni, Pb and Zn- were extracted under optimal conditions for a 12.5 ratio (extractant volume/sample mass) with 0.005 mol Lâ1 EDTA solution, 0.1 mol Lâ1 NaHCO3, 5.0 mmol Lâ1 Bmim[BF4] and 7.0 min of sonication time, using an ultrasonic bath (output power of 160 W). The best extractions were obtained with 100 W (power dissipated in the liquid). These conditions were obtained applying the univariate method. It is important to highlight that the conventional method (extraction with 0.05 mol Lâ1 EDTA solution only) consumes 6 h to extract available metals from sediment samples selectively, and with the proposed procedure the extraction time is noticeable reduced to 7.0 min. Extractable metal concentrations obtained were measured by flame atomic absorption spectrometry. The results showed good agreement with those obtained by the conventional method using a Student's paired t-test.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 34, January 2017, Pages 239-245
Journal: Ultrasonics Sonochemistry - Volume 34, January 2017, Pages 239-245
نویسندگان
Silvana M. Álvarez, Natalia E. Llamas, Adriana G. Lista, Mónica B. Álvarez, Claudia E. Domini,