Journal of Guangxi Normal University(Natural Science Edition) ›› 2015, Vol. 33 ›› Issue (2): 88-95.doi: 10.16088/j.issn.1001-6600.2015.02.014

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An Analytical Platform of Nanosilver SPR Rayleigh Scatteringand Its Application to Detect N2H4

TANG Xue-ping1,2,3, WANG Yao-hui1,2,3, LIU Qing-ye1,2,3, WEN Gui-qing1,2,3, ZHANG Xing-hui1,2,3,
LUO Yang-he1,2,3, LIANG Ai-hui1,2,3, JIANG Zhi-liang1,2,3   

  1. 1.Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education,Guangxi Normal University, Guilin Guangxi 541004, China;
    2. Guangxi Key Laboratory of Environmental Pollution ControlTheory and Technology, Guangxi Normal University, Guilin Guangxi 541004, China;
    3. College of Environment Scienceand Resources, Guangxi Normal University,Guilin Guangxi 541004, China
  • Received:2015-03-30 Online:2015-02-10 Published:2018-09-20

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Abstract: In pH 6.2 Na2HPO4-citric acid buffer solution, water bath 60 ℃, Au3+ from HAuCl4 was reduced to Au nanoflowers (AuNF) by hydrazine hydrate (N2H4)that catalyzed by silver nanoparticles (AgNPs)and growing around the AgNPs surface. Thus, the special AuNFs exhibited a strong resonance Rayleigh scattering (RRS)peak at 370 nm. With increase of N2H4 concentration, AuNFs gradually increased and formed the larger size AuNFs, and the RRS intensity was linearly increased. So, a simple and sensitive nanosilver catalytic reaction RRS analysis platform was fabricated which can be utilized to detect trace N2H4. Under the selected conditions, a linear relation between the increased RRS intensity (ΔI370 nm)and N2H4 concentration was found in the range of 0.012 5～3.5 μmol/L, with a regression equation of ΔIRS=1 297.8C+228.78, and detection limit of 0.006 μmol/L. The method was used for the detection of N2H4 in water sample with satisfactory results.

Key words: AgNP catalysis, HAuCl4, RRS, N2H4

CLC Number: 

  • O657.3
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