| CdTe量子点作探针共振瑞利散射法测定肝素钠 |
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| 引用本文： | 闫曙光,何佑秋,彭娟娟,王雷,范小青.CdTe量子点作探针共振瑞利散射法测定肝素钠[J].西南大学学报,2010,32(3). |
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| 作者姓名： | 闫曙光 何佑秋 彭娟娟 王雷 范小青 |
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| 作者单位： | 西南大学化学化工学院,重庆,400715 |
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| 基金项目： | 发光与实时分析重庆市重点实验室(西南大学)资助项目 |
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| 摘 要： | 在水相中低温条件下制备了巯基乙胺稳定的CdTe量子点(CdTe QDs).基于肝素钠(Heparin)对巯基乙胺稳定的CdTe QDs共振瑞利散射(RRS)的增强作用,同时二级散射(SOS)和倍频散射(FDS)也相应增强,建立了一种快速、简便、定量测定肝素的新方法,同时讨论了最佳反应条件和影响因素,以RRS为例,在311 nm处,RRS的光谱强度与肝素钠的质量浓度c/(I-I_0)有良好的线性关系(r=0.999 1),线性范围13.5～1000 ng/mL,检出限(3σ)为4.04 ng/mL.可用于血样中肝素钠的测定.Abstract：Aqueous cysteamine-capped CdTe quantum dots(QDs) were prepared under low temperature.A simple and rapid quantitative method for heparin determination was proposed, based on the fact that hepa-tin can enhance CdTe QDs resonance Rayleigh scattering (RRS) and the intensities of second-order scatter-ing (SOS) and frequency-doubling scattering (FDS).Factors affecting RRS for detecting heparin with cys-teamine-capped CdTe QDs were studied.At 311 nm, the RRS calibration plot of C/(I-I_0) with concen-tration of heparin was linear in the range of 13.5-1 000 ng/mL with a correlation coefficient of 0.999.The limit of detection (30) was 4.04 ng/mL.
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| 关 键 词： | CdTe量子点 共振瑞利散射 肝素钠 |
Resonance Rayleigh Scattering Methed for Determineation of Heparin Using CdTe QDs as the Probe |
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| YAN Shu-guang,HE You-qiu,PENG Juan-juan,WANG Lei,FAN Xiao-qing.Resonance Rayleigh Scattering Methed for Determineation of Heparin Using CdTe QDs as the Probe[J].Journal of Southwest Agricultural University,2010,32(3). |
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| Authors: | YAN Shu-guang HE You-qiu PENG Juan-juan WANG Lei FAN Xiao-qing |
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