شماره ركورد كنفرانس :
5498
عنوان مقاله :
Mercury (II) Detection Using Nitrogen and Sulfur co-doped Carbon Quantum Dots and Fluorescence Quenching Assay
عنوان به زبان ديگر :
Mercury (II) Detection Using Nitrogen and Sulfur co-doped Carbon Quantum Dots and Fluorescence Quenching Assay
پديدآورندگان :
Chaghazardi Mosayeb mosayebch7@gmail.com Faculty of Chemistry, Razi University, Kermanshah, Iran , Kashanian Soheila kashanian_s@yahoo.com Faculty of Chemistry, Razi University, Kermanshah, Iran , Nazari Maryam Faculty of Chemistry, Sensor and Biosensor Research Center (SBRC) Nanoscience and Nanotechnology Research Center (NNRC), Razi University, Kermanshah, Iran
كليدواژه :
Carbon quantum dots , Mercury sensor , Fluorescence quenching , Chitosan
عنوان كنفرانس :
اولين كنفرانس بين المللي و چهارمين كنفرانس ملي تجهيزات و فناوري هاي آزمايشگاهي
چكيده فارسي :
Mercury is a highly toxic and potentially bioaccumulative heavy metal ion that can cause severe health problems in humans even at very low concentrations. Thus, the development of a simple, rapid, and sensitive assay for the effective detection of mercury ions at trace levels is of great importance. Here, nitrogen and sulfur co-doped carbon quantum dots (N,S-CQD) were synthesized by hydrothermal treatment of chitosan in the presence of thiourea and citric acid with a quantum yield (QY) up to 33.0 % and used as a selective fluorescent probe to detect mercury ions (Hg2+). The synthesized N,S-CQD showed ultrasensitive ability to detect Hg2+ ions in the presence of 11 interfering metal ions, with a low detection limit (~4 nM) over a wide linear range from ~5- 160 nM. The sensing performance of N,S-CQD probe in real sample applications was evaluated by the detection of Hg2+ in lake water samples.
