ترکیب دو روش میکرواستخراج برای پیش تغلیظ و استخراج مقدارهای کم مس و اندازه گیری با طیف سنجی جذب شعله ای

پژوهش های کاربردی در شیمی

مقاله 9، دوره 17، شماره 3، آذر 1402، صفحه 89-100   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.30495/jacr.2023.1980122.2103

نویسنده

مریم رضیئی^*

استادیار شیمی تجزیه دانشکده شیمی، واحد تهران شمال، دانشگاه آزاد اسلامی، تهران، ایران.

چکیده

       در این پژوهش، روش میکرواستخراج نامیزه به­کمک امواج فراصوت برپایه انجماد قطره آلی شناور همراه با دستگاه جذب اتمی شعله­ای برای استخراج، پیش­تغلیظ و اندازه­گیری مس در نمونه­های آبی متفاوت به­کارگرفته شد. کاتیون مس با لیگاند در شرایط مناسب تشکیل کمپلکس ­داد و از فاز آبی به فاز آلی استخراج­کننده که با میکروسرنگ به محلول آبی تزریق­شده بود، منتقل ­شد. به­کمک امواج فراصوت، قطره­های بسیار ریز حلال استخراج­کننده در فاز آبی پراکنده و محلول ابری نامیزه تشکیل ­شد. کاربرد گریزانه و حمام یخ در این روش منجر به انجماد میکروقطره حلال آلی از سطح محلول آبی شد که پس از جمع­آوری، با اتانول به­عنوان حامل به دستگاه جذب اتمی برای اندازه­گیری وارد شد. عامل­های موثر بر تشکیل کمپلکس مس و استخراج بررسی و شرایط بهینه گزارش شد. ارقام شایستگی در روش پیشنهادی ارزشیابی شد که نتیجه­های قابل­قبول و بهتری از گزارش­های پیشین داشت. کارایی روش استخراجی به­طورموفقیت­آمیزی در نمونه­های متفاوت آبی، تایید شد.

کلیدواژه‌ها

میکرو استخراج؛ اندازه گیری مس؛ پیش تغلیظ؛ طیف سنجی جذب اتمی شعله ای؛ نمونه های آب

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