广西师范大学学报（自然科学版） ›› 2015, Vol. 33 ›› Issue (2): 88-95.doi: 10.16088/j.issn.1001-6600.2015.02.014

• • 上一篇    下一篇

纳米银催化共振瑞利散射光谱检测痕量肼

汤雪萍1,2,3, 王耀辉1,2,3, 刘庆业1,2,3, 温桂清1,2,3, 张杏辉1,2,3, 罗杨合1,2,3, 梁爱惠1,2,3, 蒋治良1,2,3   

  1. 1. 广西师范大学珍稀濒危动植物生态与环境保护教育部重点实验室,广西桂林541004;
    2. 广西师范大学广西污染控制理论与技术重点实验室,广西桂林541004;
    3. 广西师范大学环境与资源学院,广西桂林541004
  • 收稿日期:2015-03-30 出版日期:2015-02-10 发布日期:2018-09-20
  • 通讯作者: 蒋治良(1965—),男,广西全州人,广西师范大学教授,博导。E-mail: zljiang@mailbox.gxnu.edu.cn
  • 作者简介:王耀辉和汤雪萍为共同第一作者。
  • 基金资助:
    国家自然科学基金资助项目(21477025,21465006,21267004,21367005,21365011,21467001,21447006,21307017);广西自然科学基金资助项目(2013GXNSFFA019003,2014GXNSFAA118050,2014GXNSFAA118059)

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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摘要： 在pH 6.2的Na2HPO4-柠檬酸缓冲溶液、水浴60 ℃条件下,纳米银粒子催化水合肼(N2H4)还原氯金酸(HAuCl4),Au3+被还原成单质金并吸附在金纳米表面,在370 nm处有一个较强的共振瑞利散射(RRS)峰。随着N2H4浓度的增大,生成的单质金越多,金纳米的粒径也逐渐增大,使得体系370 nm处的共振瑞利散射峰线性强度增大,从而构建纳米银催化RRS分析平台并用于检测N2H4。在选定条件下,N2H4的浓度在0.012 5～3.5 μmol/L范围内与共振散射峰强度增加值ΔI呈现良好线性关系,线性方程为ΔIRS=1 297.8C+228.78,检出限为0.006 μmol/L N2H4,该法测定了水样中的N2H4,结果令人满意。

关键词: 纳米金, 氯金酸, 共振瑞利散射, N2H4

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

中图分类号: 

  • O657.3
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