کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1167571 | 1491139 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Separation of trace amount of silver using dispersive liquid-liquid based on solidification of floating organic drop microextraction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the present work, dispersive liquid-liquid microextraction based on solidification of floating organic drop was developed as a simple and rapid technique for separation of silver ions from aqueous samples. In this technique, 700 μL 0.02% of 5-(4â²-dimethylamino benzyliden)-rhodanine (chelating agent) was added into the 10 mL analyte sample in a test tube and 30.0 μL 1-undecanol (extraction solvent) was injected shortly thereafter. The test tubes were sonicated, centrifuged and then some effective parameters on extraction and complex formation, such as type and volume of extraction and disperser solvent, pH, the amount of chelating agent and extraction time were optimized. The effect of the interfering ions on the analytes recovery was also investigated. The calibration graph was linear in the range of 0.10-10.0 ng mLâ1 with detection limit of 0.056 ng mLâ1 (n = 8). The relative standard deviation (RSD) was±4.3% (n = 8, C = 5.0 ng mLâ1) and the enrichment factor was 250.0. The proposed method was applied for extraction and determination of silver in different water samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 684, Issues 1â2, 17 January 2011, Pages 54-58
Journal: Analytica Chimica Acta - Volume 684, Issues 1â2, 17 January 2011, Pages 54-58
نویسندگان
Daryoush Afzali, Ali Reza Mohadesi, Behnoosh Bahadori Jahromi, Masoumeh Falahnejad,