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اندازه‌گیری سریع و حساس فلوریمتری فرمالدهید در نمونه‌های شوینده با استفاده از نقاط کوانتومی گرافن آلاییده شده با S و N | ||
| شیمى کاربردى روز | ||
| دوره 20، شماره 74، فروردین 1404، صفحه 297-312 اصل مقاله (1.07 M) | ||
| نوع مقاله: مقاله علمی پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/chem.2025.36792.2349 | ||
| نویسندگان | ||
| رحیم محمدرضائی* ؛ معصومه علی کرمی؛ مهدی گلمحمدپور؛ زهرا امامی؛ حسن حیدری | ||
| آزمایشگاه تحقیقاتی شیمی تجزیه، دانشکده علوم پایه، دانشگاه شهید مدنی آذربایجان، تبریز، ایران | ||
| تاریخ دریافت: 07 اسفند 1403، تاریخ بازنگری: 05 خرداد 1404، تاریخ پذیرش: 17 خرداد 1404 | ||
| چکیده | ||
| در این مقاله، یک حسگر حساس فلورسانس مبتنی بر نقاط کوانتومی گرافنی آلاییده شده با نیتروژن و گوگرد (S, N-GQDs) برای تشخیص فرمالدهید در شوینده ها گزارش شده است. S, N-GQDs سنتز شده با دقت توسط روش های میکروسکوپ الکترونی روبشی (TEM)، طیف بینی زیر قرمز تبدیل فوریه (FTIR) و طیف بینی فلورسانس مشخصه یابی شده است. تحت شرایط بهینه، محدوده خطی 1200-5/0 میکروگرم بر میلی‌لیتر و حد تشخیص 3/0 میکروگرم بر میلی‌لیتر برای تشخیص فرمالدهید با استفاده از روش فلوریمتری (طول موج تحریک 360 نانومتر و طول موج نشری اندازه گیری شده در 440 نانومتر) به دست آمد. پارامترهای موثر بر میزان خاموش سازی فلورسانس مانند زمان اندرکنش میان فرمالدهید و S, N-GQDs و همچنین اثر pH مورد مطالعه قرار گرفتند. بر اساس مطالعات تجربی صورت گرفته، کاهش میزان جذب نور در حضور فرمالدهید عامل اصلی کاهش شدت فلورسانس S, N-GQDs می باشد. بر اساس نتایج تجربی، روش توسعه داده شده دارای دقت و صحت مناسبی برای اندازه گیری فرمالدهید می باشد. این روش با موفقیت برای اندازه گیری نمونه های فرمالدهید در نمونه های شوینده با حساسیت و گزینش پذیری مناسبی مورد استفاده قرار گرفت. | ||
| کلیدواژه‌ها | ||
| نقاط کوانتومی آلاییده شده با S و N؛ فلورسانس؛ شوینده؛ فرمالدهید | ||
| عنوان مقاله [English] | ||
| Fast and Sensitive Fluorimetric Detection of Formaldehyde in Detergent Samples using S, N Doped Graphene Quantum Dots | ||
| نویسندگان [English] | ||
| Rahim Mohammad-Rezaei؛ Masoumeh Ali-Karami؛ Mahdi Golmohammadpour؛ Zahra Emami؛ Hassan Heidari | ||
| Analytical Chemistry Research Laboratory, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran | ||
| چکیده [English] | ||
| In this paper, a sensitive fluorescence sensor based on nitrogen and sulfur-doped graphene quantum dots (S, N-GQDs) for the formaldehyde detection in detergent samples was reported. The synthesized S, N-GQDs was carefully characterized using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and fluorescence spectroscopy techniques in details. Under the optimized conditions, a linear range of 0.5-1200 μg mL-1 and a detection limit of 0.3 μg mL-1 were achieved for the formaldehyde detection using the developed fluorimetry method (excitation and emission wavelength were 360 and 440 nm respectively). Important parameters which could be affect the fluorescence quenching such as interaction time between the S, N-GQDs and formaldehyde as well as pH were optimized. According to experimental studies, the decrease of absorption in the presence of formaldehyde is the main reason for the fluorescence quenching of S, N-GQDs. According to experimental results, the developed method represented suitable accuracy and precision for the formaldehyde measurement. This method was successfully applied for the measurement of formaldehyde in detergent samples with acceptable selectivity and sensitivity. | ||
| کلیدواژه‌ها [English] | ||
| S, N-GQDs, Fluorescence, Detergent, Formaldehyde | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 71 تعداد دریافت فایل اصل مقاله: 4 |
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