| CdTe/CdS荧光探针测定痕量铜(Ⅱ) |
| |
| 引用本文： | 高楼军,赵艳,孙雪花,柴红梅,陈露.CdTe/CdS荧光探针测定痕量铜(Ⅱ)[J].分析试验室,2012(3):59-61. |
| |
| 作者姓名： | 高楼军 赵艳 孙雪花 柴红梅 陈露 |
| |
| 作者单位： | 延安大学化学与化工学院陕西省化学反应工程重点实验室 |
| |
| 基金项目： | 陕西省延安市科技局基金项目(2009kg-02)资助 |
| |
| 摘 要： | 以巯基乙酸为稳定剂,在水溶液中合成CdTe/CdS量子点,基于量子点与Cu2+混合后发生荧光猝灭作用,建立CdTe/CdS量子点作为荧光探针检测微量铜的新方法。在pH 4.60的HAc-NaAc缓冲溶液中,反应时间为10 min时,Cu2+质量浓度在0.01～1.00μg/mL范围与CdTe/CdS量子点的荧光猝灭程度呈良好的线性关系,相关系数为0.9978,检出限为9.90×10-3μg/mL。方法可以用于雨水、自来水和延河水中Cu2+的分析。
|
| 关 键 词： | CdTe/CdS量子点 荧光猝灭 Cu2+ |
Fluorescence quenching method for the determination of copper ions with CdTe/CdS quantum dots |
| |
| GAO Lou-jun,ZHAO Yan,SUN Xue-hua,CHAI Hong-mei and CHEN Lu.Fluorescence quenching method for the determination of copper ions with CdTe/CdS quantum dots[J].Chinese Journal of Analysis Laboratory,2012(3):59-61. |
| |
| Authors: | GAO Lou-jun ZHAO Yan SUN Xue-hua CHAI Hong-mei and CHEN Lu |
| |
| Institution: | (Shaanxi Key Laboratory of Chemical Reaction Engineering,Yan’an University,Department of Chemistry & Chemical Engineering,Yan’an 716000) |
| |
| Abstract: | CdTe/CdS quantum dots were synthesized in aqueous solution with thioglycolic acid as the stabilizer.A novel method for the determination of Cu2+ has been developed based on quenching of the fluorescence of CdTe/CdS QDs by Cu2+ in aqueous solutions.The optimum reaction conditions are at pH 4.60 with NaAc-HAc as a buffer solution and the reacting time of 10 minutes,The quenched fluorescence intensity of CdTe/CdS QDs is linearly in proportion to the concentration of Cu2+ from 0.01 to 1.0μg/mL with a correlation coefficient of 0.9978.The detection limit for Cu2+ is 9.90×10-3μg/mL.The method can be used for analysis of practical samples with reliable results. |
| |
| Keywords: | CdTe/CdS quantum dots Fluorescence quenching Copper ion |
| 本文献已被 CNKI 等数据库收录！ |
