A silver nanorod resonance rayleigh scattering-energy transfer analytical platform for trace tea polyphenols

被引：15
|
作者：
Liang, Aihui [1 ]
Wang, Yaohui [1 ]
Wen, Guiqing [1 ]
Zhang, Xinghui [1 ]
Luo, Yanghe [1 ]
Jiang, Zhiliang [1 ]
机构：
[1] Guangxi Normal Univ, Key Lab Ecol Rare & Endangered Species & Environm, Guangxi Key Lab Environm Pollut Control Theory &, Minist Educ, Guilin 541004, Peoples R China
来源：
FOOD CHEMISTRY | 2016年 / 197卷
基金：
中国国家自然科学基金;
关键词：
Tea polyphenols; AgNR; Molybdate; RRS-ET; PERFORMANCE LIQUID-CHROMATOGRAPHY; SURFACE-PLASMON-RESONANCE; SELECTIVE DETERMINATION; GREEN TEA; NANOPARTICLES; RAMAN; ACID;
D O I：
10.1016/j.foodchem.2015.10.137
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The stable silver nanorod (AgNR) sol in red was prepared by the two-step procedure of NaBH4-H2O2 and citrate heating reduction, and it exhibited a strong resonance Rayleigh scattering (RRS) peak at 346 nm. In pH 3.8 HAc-NaAc buffer solution, tea polyphenols (TP) reacted with ammonium molybdate (AM) to form yellow organic molybdate (OM) as receptor that was closed to the donor of AgNR, the RRS energy transfer (RRS-ET) takes place, owing to the overlapping between the AgNR RRS spectra and OM absorption spectra. When TP concentration increased, the RRS intensity decreased due to the RRS-ET increasing. So, a simple and sensitive AgNR surface plasmon RRS-ET analytical platform was fabricated to detect trace TP in the range of 0.05-0.85 mu g/mL, with a detection limit of 0.03 mu g/mL TP. The TP in tea samples was analyzed by this RRS-ET analysis platform, with satisfactory results. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：395 / 399
页数：5
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