Determination of Trace Boron Based on Gold Nanorod Plasmonic Resonance Rayleigh Scattering Energy Transfer to the Coordinate
YE Ling-ling1, LI Ting-sheng1, LUO Yang-he1, 2, WEN Gui-qing1, LIANG Ai-hui1*, JIANG Zhi-liang1*
1. Key Laboratory of Ecology of Rare and Endangered Species and Environmental Conservation of Ministry of Education Ministry, Guangxi Normal University, Guilin 541004, China 2. Hezhou University, Hezhou 542899, China
Abstract：B is a necessary trace element for human and animals, but the excess intake of B caused poison. Thus, it is very important to determination of B in foods and water. The target of this study is development of a new, sensitive and selective resonance Rayleigh scattering energy transfer (RRS-ET) for the determination of B. The combination of energy transfer with resonance Rayleigh scattering (RRS) has developed a new technology called RRS-ET, which can realize selective and sensitive detection of boric acid. The gold nanorods in diameter of 12 nm and length of 37 nm were prepared by the seed growth procedure. In pH 5.6 NH4Ac-HAc buffer solution and in the presence of azomethine-H (AMH), the gold nanorod particles exhibited a strong resonance Rayleigh scattering (RRS) peak at 404 nm. In the presence of boric acid, it reacts with AMH to form AMH-boric acid (AMH-B) complexes. When the complexe as a receptor close to the gold nanorod as a donor, the resonance Rayleigh scattering energy transfer (RRS-ET) take placed that resulted in the Rayleigh scattering signal quenching. With the increase of the concentration of boric acid, the formed complexes increased, the scattering light energy of gold nanorod transfer to the complexes increased, resulting in the Rayleigh scattering intensity linearly reduced at 404 nm. The decreased RRS intensity responds linearly to the concentration of boron over 10～750 ng·mL-1 B, with a regress equation of ΔI404 nm=3.53ｃ+24 and a detection of 5 ng·mL-1 B. The influence of coexistence substances on the RRS-ET determination of 2.3×10-7 mol·L-1 B was considered in details. Results showed that this new RRS-ET method is of high selectivity, that is, 4×10-4 mol·L-1 Mn2+, Cd2+, Zn2+，Bi3+, Na+, Al3+, glucose, Hg2+, IO-3, F-, SO2-4, SiO2-3, NO-3, ClO-4, H2O2, mannitol, glycerol, and ethylene glycol, 4×10-5 mol·L-1 L-tyrosine, and 2×10-4 mol·L-1 L-glutamic acid do not interfere with the determination. Based on this, a new sensitive, selective, simple and rapid RRS-ET method has been developed for the determination of trace boron in six mineral water samples that contain 24.9, 29.3, 57.9, 59.0, 84.9, and 105.1 ng·mL-1 B, with relative standard deviation of 1.6%～4.1% and recovery of 95.6%～109.6%.
Key words：Resonance Rayleigh scattering energy transfer;Boric acid;Complex;Gold nanorod
叶玲玲1, 李廷盛1，罗杨合1，2，温桂清1, 梁爱惠1*, 蒋治良1* . 金纳米棒表面等离子体共振瑞利散射能量转移光谱测定痕量硼 [J]. 光谱学与光谱分析, 2015, 35(05): 1309-1311.
YE Ling-ling1, LI Ting-sheng1, LUO Yang-he1, 2, WEN Gui-qing1, LIANG Ai-hui1*, JIANG Zhi-liang1* . Determination of Trace Boron Based on Gold Nanorod Plasmonic Resonance Rayleigh Scattering Energy Transfer to the Coordinate. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(05): 1309-1311.
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