A Highly Sensitive Resonance Rayleigh Scattering Method for the Determination of Vitamin B1 with Gold Nanoparticles Probe |
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| Authors: | Shaopu Liu Yuehua Chen Zhongfang Liu Xiaoli Hu Fen Wang |
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| Institution: | (1) School of Chemistry and Chemical Engineering, Southwest China Normal University, 400715 Chongqing, P.R. China;(2) College of Chemistry and Environmental Science, Henan Normal University, 453007 Xinxiang, Henan, P.R. China |
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| Abstract: | In weakly acidic buffer medium, vitamin B1 (VB1) interacts with gold nanoparticles to form a binding product, which resulted in a significant enhancement of resonance Rayleigh
scattering (RRS) intensity and the appearance of a new RRS spectrum. The maximum RRS peak was at 368 nm, and there are three
smaller scattering peaks that were at 284 nm, 440 nm and 495 nm, respectively. The enhanced RRS intensity (ΔI) was directly proportional to the concentration of VB1 in the range of 0–2.8 × 10−7 mol L−1. The method had high sensitivity and its detection limit (3σ) was 0.9 ng mL−1. The optimum conditions and the influencing factors have been investigated. The method had good selectivity, which could
be observed from the influence of coexisting substances. A sensitive, simple and fast RRS method for the determination of
VB1 with gold nanoparticle probe has been developed. In addition, the reasons for RRS enhancement were discussed. |
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| Keywords: | : Gold nanoparticles resonance Rayleigh scattering vitamin B1 |
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