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Application of Choline Chloride:4-Bromo Phenol Deep Eutectic Solvent-Based Dispersive Liquid–Liquid Microxtraction for Cobalt Sensitive Determination and Preconcentration in Water Samples and and Agricultural Products | ||
| Iranian Journal of Analytical Chemistry | ||
| دوره 7، شماره 2 - شماره پیاپی 14، آذر 2020، صفحه 92-99 اصل مقاله (712.94 K) | ||
| نوع مقاله: Full research article | ||
| شناسه دیجیتال (DOI): 10.30473/ijac.2021.59496.1197 | ||
| نویسندگان | ||
| Reyhaneh Rahnama* ؛ Saideh Fatemeh Shafeii Darabi؛ Mohammad Reza Jamali | ||
| Department of Chemistry, Payame Noor University, P.O. Box 19395-4697, Tehran, Iran | ||
| چکیده | ||
| This work presents a fast, feasible, and sensitive method for the preconcentration and separation of cobalt in various real samples through the use of deep eutectic solvent-based dispersive liquid-liquid microextraction (DES-DLLME) in which deep eutectic solvent, methanol, and 1-(2-pyridylazo)-2-naphthole (PAN) were employed as extraction solvent, dispersive solvent, and complexing agent, respectively. Co concentration was measured by flame atomic absorption spectrometer. Effective parameters which may influence the extraction efficiencies (like type and volume of the dispersive and extraction solvent, pH, PAN concentration, and salt concentration) were examined and the optimal values were determined. The use of optimal conditions resulted in a limit of detection equal to 1.5 μg/L with a preconcentration factor of 40. RSD value, after measuring 20.0 μg/L of cobalt for 10 times, resulted in a value of 3.0 %. The methodʼ s accuracy and applicability were assessed through the evaluation of Co content in water certified reference materials and different agricultural and water specimen. | ||
| کلیدواژهها | ||
| Deep Eutectic Solvent Based Dispersive Liquid-Liquid Microextraction؛ 1-(2-pyridylazo)-2-Naphthole؛ Cobalt؛ Water samples؛ Agricultural Products | ||
| عنوان مقاله [English] | ||
| وکاربرد میکرواستخراج مایع-مایع پخشی بر اساس کاربرد حلال اتکتیک عمیق کولین کلراید: 4-برومو فنل برای پیش تغلیظ و اندازه گیری دقیق کبالت در نمونه های آبی و محصولات کشاورزی | ||
| نویسندگان [English] | ||
| ریحانه راهنما؛ سید فاطمه شفیعی دارابی؛ محمد رضا جمالی | ||
| دانشکده شیمی، دانشگاه پیام نور، تهران، ایران | ||
| چکیده [English] | ||
| در این تحقیق یک روش سریع، کاربردی و حساس برای پیش تغلیظ و جداسازی کبالت از نمونه های حقیقی مختلف بر اساس استفاده از روش میکرواستخراج مایع – مایع پخشی بر پایه حلال های اتکتیک عمیق ارائه شده است که در آن از حلال اتکتیک عمیق، متانول و 1-(2-پیریدیل آزو)-2-نفتول به ترتیب به عنوان حلال استخراج کننده، حلال پخش کننده و عامل کمپلکس دهنده استفاده شده است. غلظت کبالت به وسیله دستگاه جذب اتمی شعله ای اندازه گیری شده است. پارامترهای موثر بر کارایی استخراج (مانند نوع و حجم حلال استخراج کننده و پخش کننده، pH، غلظت عامل کمپلکس دهنده و غلظت نمک) مورد بررسی و بهینه سازی قرار گرفتند. تحت شرایط بهینه حد تشخیص برای کبالت 5/1 میکروگرم بر لیتر با فاکتور پیش تغلیظ 40 بدست آمد. انحراف استاندارد نسبی برای 10 بار اندازه گیری غلظت 20 میکروگرم بر لیتر کبالت 0/3 درصد بدست آمد. صحت و کاربرد روش توسط اندازه گیری مقدار کبالت در نمونه های مرجع آبی و نمونه های آبی و محصولات کشاورزی مختلف مورد ارزیابی قرار گرفت. | ||
| کلیدواژهها [English] | ||
| میکرواستخراج مایع-مایع پخشی بر اساس کاربرد حلال اتکتیک عمیق؛ 1-(2-پیریدیل آزو)-2-نفتول؛ کبالت, نمونه های آبی؛ محصولات کشاورزی | ||
| مراجع | ||
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