نوع مقاله : مقاله پژوهشی کامل
نویسندگان
بخش شیمی، دانشکده علوم، دانشگاه آزاد اسلامی واحد اراک، اراک، ایران
چکیده
میکرواستخراج فاز مایع جدید با استفاده از حلال آبدوست قابل تغییر کوپل شده با اسپکترومتری جذب اتمی شعله برای پیش تغلیظ و استخراج نقره بکار برده شد. در این تحقیق، تری اتیل آمین به‌عنوان حلال سبز قابل تغییر استفاده گردید. کمپلکس نقره با 1- (2- پیریدیل آزو)-2- نفتول به درون فاز آلی با تبدیل تری اتیل آمین کربنات پروتونه شده به تری اتیل آمین، استخراج می‌شود. شرایط آزمایش با طراحی پلاکت-برمن و باکس-بنکن بررسی و بهینه شد. پارامترهای تجزیه‌ای مثل حدتشخیص، انحراف استاندارد نسبی و فاکتور تغلیظ روش به‌ترتیب 35/0 میکروگرم بر لیتر، 4/1٪ و 68 بدست آمد. منحنی کالیبراسیون دارای گستره خطی 500-2 میکروگرم بر لیتر با ضریب همبستگی 997/0 بود. روش پیشنهادی به طور موفقیت‌آمیزی برای اندازه‌گیری و استخراج مقادیر ناچیز یون نقره در چندین نمونه آب بکار برده شد.
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