کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1241754 1495777 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solvent bar micro-extraction with graphite atomic absorption spectrometry for the determination of silver in ocean water
ترجمه فارسی عنوان
میکرو استخراج نوار محلول با طیف سنجی جذب اتمی گرافیت برای تعیین نقره در آب های اقیانوس
کلمات کلیدی
نقره، تجزیه و تحلیل فوق العاده آب دریا مایع یونی، میکرو استخراج نوار محلول
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Ionic liquid based 2SBME allows Ag pre-concentration in seawater samples.
• Using Aliquat 336® 2SBME with GFAAS offers a limit of detection 0.1 ng L−1.
• Ionic liquid 2SBME is alternative to existing methods for Ag analysis in seawater.

Main drawbacks for silver determination in seawater are the effects of samples matrix and that Ag appears in the sub ng L−1. Available methods for sample preparation in Ag analysis are based on solid and liquid extraction using tedious process that increase the cost of analysis and the risk of sample contamination, producing important waste amounts.Solvent bar micro-extraction (SBME) allows the pre-concentration of Ag in a micro-volume of the ionic liquid Aliquat 336® in kerosene solution. For this reason, it is considered as a green alternative to standard methods. The method has been optimized using synthetic seawater samples, offering the highest response for samples at pH=2, using 5% Aliquat 336® dissolved in kerosene containing 5% dodecan-1-ol as acceptor solution and after 1 h stirring at 800 rpm.The method exhibited linearity up to 50 ng L−1, with a limit of detection of 0.09 ng L−1, covering the concentration range of interest for environmental studies. Finally, it was applied for determination of Ag in real seawater samples, and the results were compared with the reference method of liquid-liquid extraction with 1-pyrrolidine-dithiocarbamate and diethylammonium-diethyldithiocarbamate, showing the applicability of ionic liquid based SBME using Aliquat 336® for the simple monitoring of silver ultra-traces in seawater analysis.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 159, 1 October 2016, Pages 117–121
نویسندگان
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