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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于纳米通道表面增强拉曼散射光谱分离检测组氨酸对映体的研究
DOI: 10.11895/j.issn.0253-3820.150595, PP. 1695-1700
Keywords: 金纳米通道,手性分离,表面增强拉曼光谱,组氨酸
Abstract:
以Al2O3纳米通道膜为基体制备金纳米通道,以场发射扫描电镜、循环伏安、交流阻抗等方法对金纳米通道进行表征。采用EDC-NHS的交联反应,将壳聚糖自组装至金纳米通道孔壁上,形成表面具有手性位点选择性的功能化纳米通道膜,利用纳米通道优异的分离能力手性分离D-,L-组氨酸。考察了纳米通道孔径和溶液的pH值对分离效果的影响。采用银溶胶作为表面增强拉曼(SERS)测试的基底,增强对D-,L-组氨酸的SERS效应,提高检测该物质的选择性和灵敏度。分别在1000和1590cm-1处测定L-组氨酸和D-组氨酸。在含200μL组氨酸、100μL银溶胶和100μL80mmol/LNaCl溶液(pH=7.59)中,D-组氨酸和L-组氨酸可得到较好分离,分离度达到4.91。
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