| CdTe量子点荧光猝灭法测定钴 |
| |
| 引用本文： | 徐基贵,陈志兵,卞丽霞,刘夏,马凤侠. CdTe量子点荧光猝灭法测定钴[J]. 光谱实验室, 2010, 27(5): 1855-1858 |
| |
| 作者姓名： | 徐基贵 陈志兵 卞丽霞 刘夏 马凤侠 |
| |
| 作者单位： | 自旋电子与纳米材料安徽省重点实验室培育基地,宿州学院化学与生命科学系,安徽省宿州市汴河路71号,234000 |
| |
| 基金项目： | 国家自然科学基金项目，安徽省优秀青年人才基金项目，宿州学院科研平台开放课题资助 |
| |
| 摘 要： | 以CdTe量子点作为荧光探针,基于荧光猝灭法对钴(Ⅱ)进行了定量检测,考察了缓冲溶液体系、量子点浓度、反应时间等多种因素的影响。实验结果表明,在pH8.0的0.2mol/LNa2HPO4-NaH2PO4缓冲液中,反应时间为10min,钴(Ⅱ)浓度为1.6×10-5—20×10-5mol/L范围时,其线性回归方程为F0/F=1.45+0.096Q(10-5mol/L),检出限为3×10-7mol/L。该方法检测范围宽,灵敏度高,为钴的测定提供了新的方法。
|
| 关 键 词： | CdTe量子点 钴（Ⅱ） 荧光猝灭 |
Cobalt Determination Based on Fluorescence Quenching of CdTe Quantum Dots |
| |
| XU Ji-Gui,CHEN Zhi-Bing,BIAN Li-Xia,LIU Xia,MA Feng-Xia. Cobalt Determination Based on Fluorescence Quenching of CdTe Quantum Dots[J]. Chinese Journal of Spectroscopy Laboratory, 2010, 27(5): 1855-1858 |
| |
| Authors: | XU Ji-Gui CHEN Zhi-Bing BIAN Li-Xia LIU Xia MA Feng-Xia |
| |
| Affiliation: | [Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base),Department of Chemistry ＆ Biology,Suzhou College,Suzhou,Anhui 234000,P.R.China] |
| |
| Abstract: | Cobalt（Ⅱ）was quantitatively detected based on its fluorescence（PL）quenching of CdTe quantum dots（QDs）.The experimental conditions including buffer solution,concentration of CdTe QDs,and incubation time are optimized.Under the optimized conditions,0.2mol/L Na2HPO4-NaH2PO4 buffer solution with 8.0 and 10min of incubation,the emission intensity of CdTe QDs and the concentration of Cobalt（Ⅱ）follow the Sterm-Volmer equation in the range of 1.6×10-5—20×10-5mol/L.The obtained linear equation is：F0/F=1.45＋0.096Q（10-5mol/L）with the detection limit of 3×10-7mol/L.These results show that CdTe QDs can be potentially used as luminescent probe for detecting cobalt. |
| |
| Keywords: | CdTe Quantum Dots Cobalt（Ⅱ） Fluorescence Quenching |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
