| TiO_2-SiO_2纳米粒子的合成及二级散射光谱法测定核糖核酸 |
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| 引用本文： | 董存智,梁丽娜,张淑静.TiO_2-SiO_2纳米粒子的合成及二级散射光谱法测定核糖核酸[J].分析化学,2009,37(2). |
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| 作者姓名： | 董存智 梁丽娜 张淑静 |
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| 作者单位： | 淮北煤炭师范学院化学系,淮北,235000 |
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| 摘 要： | 采用溶胶-凝胶法制备了TiO2-SiO2纳米粒子.通过X-射线衍射谱、透射电子显微镜等对纳米粒子进行了表征.研究了TiO2-SiO2纳米粒子与核糖核酸(RNA)的相互作用,建立了基于纳米粒子与RNA吸附反应,二级散射光谱法测定痕量RNA的新方法.方法的线性范围是0.005～5 mg/L; 检出限为1.46 μg/L.方法用于RNA合成样品的测定,回收率为99.4%～103.9%;相对标准偏差为019%～0.24%.
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| 关 键 词： | 氧化钛 氧化硅 纳米粒子 核糖核酸 二级散射 |
TiO_2-SiO_2 Nanoparticles Synthesis and Determination of Ribonucleic Acid by Second-Order Scattering Method |
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| DONG Cun-Zhi,LIANG Lin-Na,ZHANG Shu-Jing.TiO_2-SiO_2 Nanoparticles Synthesis and Determination of Ribonucleic Acid by Second-Order Scattering Method[J].Chinese Journal of Analytical Chemistry,2009,37(2). |
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| Authors: | DONG Cun-Zhi LIANG Lin-Na ZHANG Shu-Jing |
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| Institution: | Department of Chemistry HuaiBei Coal Teachers College;Huaibei 235000 |
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| Abstract: | The TiO2-SiO2 nanoparticles were synthesized by sol-gel method.The structure of the nanoparticles was characterized by XRD and TEM.The interaction of TiO2-SiO2 nanoparticles with ribonucleic acid(RNA)was studied.A new second-order scattering method for the determination of RNA has been developed based on the enhancement of second-order scattering of TiO2-SiO2 nanoparticles in the presence of RNA.Linear relationship between the second-order scattering signals and the concentration of RNA was observed in the ... |
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| Keywords: | Titanium dioxide-silica nanoparticles ribonuclieic acid second-order scattering |
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