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An On-Line Preconcentration System Based on Graphitic Carbon Nitride Coated Membrane Filter for the Fast Determination of Trace Levels of Lead in Water Samples | ||
Iranian Journal of Analytical Chemistry | ||
مقاله 4، دوره 7، شماره 2 - شماره پیاپی 14، آذر 2020، صفحه 30-36 اصل مقاله (664.03 K) | ||
نوع مقاله: Full research article | ||
شناسه دیجیتال (DOI): 10.30473/ijac.2020.55440.1174 | ||
نویسندگان | ||
Ehsan Zolfonoun* ؛ Seyed Reza Yousefi | ||
1. Nuclear Fuel Cycle Research School, Nuclear Science & Technology Research Institute, End of North Karegar Ave., P.O. Box 14395-836, Tehran, Iran | ||
چکیده | ||
A ligandless on-line solid phase extraction method was developed for the preconcentration of lead prior to quantitation by inductively coupled plasma-optical emission spectrometry. In this method, the sample solution was passed through a syringe membrane filter coated with graphitic carbon nitride and Pb(II) ions were directly adsorbed on the surface of g-C3N4 particles. The adsorbed Pb(II) ions were subsequently eluted from the membrane and transferred directly into the ICP-OES nebulizer with nitric acid solution. Under the optimized conditions and preconcentration of 25 mL of sample, the enhancement factor of 110 and the detection limit of 0.12 μg L-1 were obtained. The proposed procedure was applied for the preconcentration and determination of lead in environmental water samples. | ||
کلیدواژهها | ||
On-Line Preconcentration؛ Solid Phase Extraction؛ Graphitic Carbon Nitride؛ Lead؛ ICP-OES | ||
عنوان مقاله [English] | ||
یک سیستم پیش تغلیظ آنلاین بر اساس کربن نیترید گرافیتی نشانده شده بر روی فیلتر غشائی برای اندازه گیری سریع مقادیر جزئی سرب در نمونه های آب | ||
نویسندگان [English] | ||
احسان ذوالفنون؛ سیدرضا یوسفی | ||
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، انتهای خیابان کارگر شمالی، صندوق پستی 836-14395 تهران، ایران | ||
چکیده [English] | ||
یک روش استخراج با فاز جامد آنلاین و بدون لیگاند برای پیش تغلیظ سرب پیش از اندازه گیری با روش طیف سنجی نشری اتمی-پلاسمای جفت شده القائی توسعه داده شد. در این روش محلول نمونه از یک فیلتر غشایی سرسرنگی که بر روی آن کربن نیترید گرافیتی نشانده شده است عبور داده شده و یونهای سرب مستقیماً بر روی سطح آن جذب می شوند. سپس یونهای جذب شده بوسیله محلول اسید نیتریک واجذب شده و مستقیماً به داخل مه پاش طیف سنج وارد می شوند. تحت شرایط بهینه و پیش تغلیظ 25 میلی لیتر نمونه، فاکتور تغلیظ 110 و حد تشخیص 0.12 میکروگرم بر لیتر بدست آمدند. این روش برای پیش تغلیظ و اندازه گیری سرب در نمونه های آب زیست محیطی به کار برده شد. | ||
کلیدواژهها [English] | ||
پیش تغلیظ آنلاین, استخراج با فاز جامد, کربن نیترید گرافیتی, سرب, ICP-OES | ||
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