| 一个灵敏测定过氧化氢的吖啶红共振散射光谱新方法 |
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| 引用本文： | 梁爱惠,蒋治良,陶慧林.一个灵敏测定过氧化氢的吖啶红共振散射光谱新方法[J].光谱学与光谱分析,2007,27(1):120-122. |
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| 作者姓名： | 梁爱惠 蒋治良 陶慧林 |
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| 作者单位： | 桂林工学院材料与化学工程系,广西,桂林,541004 |
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| 基金项目： | 广西自然科学基金
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桂林工学院校科研和教改项目 |
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| 摘 要： | 在pH为5.0的HAc-NaAc缓冲液中,Fe2 催化H2O2产生·OH,·OH氧化I-为I2.过量I-与I2反应生成的I-3,与吖啶红(AR)形成AR-I3缔合物分子.在疏水作用和分子间力作用下,AR-I3缔合物分子自动聚集形成(AR-I3)n缔合物微粒.该缔合物微粒在320,400,595 nm处产生3个共振散射峰.H2O2的浓度在0.50～16.0×10-6 mol·L-1范围内与400 nm波长的共振散射光强度成线性关系,方法的检出限为2.0×10-7 mol·L-1 H2O2,用于废水中H2O2的测定,结果满意,回收率在97.9%～101.2%之间.
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| 关 键 词： | H2O2 吖啶红 缔合微粒 共振散射 |
| 文章编号： | 1000-0593（2007）01-0120-03 |
| 收稿时间： | 2005-11-16 |
| 修稿时间： | 2006-03-28 |
A New and Sensitive Resonance Scattering Spectral Method for the Determination of H2O2 Using Acridine Red |
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| LIANG Ai-hui,JIANG Zhi-liang,TAO Hui-lin.A New and Sensitive Resonance Scattering Spectral Method for the Determination of H2O2 Using Acridine Red[J].Spectroscopy and Spectral Analysis,2007,27(1):120-122. |
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| Authors: | LIANG Ai-hui JIANG Zhi-liang TAO Hui-lin |
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| Institution: | Department of Material Science and Chemical Engineering, Guilin University of Technology, Guilin 541004, China |
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| Abstract: | Under the conditions of pH 5. 0 HAc-NaAc, 1. 6 X 10(-3) mol x L(-1) KI-8. 0 X 10(-5) mol x L(-1) Fe2+-4. 0X 10(-6) mol x L(-1) H2O2-40 microg x mL(-1) acridine red (AR), when there is H2O2, reacts with I- to form I3- . The acridine red reacts with I3- to form AR-I3 ion association molecule. Under the action of the intermolecular and hydrophobic forces, these association molecules automatically aggregate to form (AR-I3 ), association particles that exhibit three resonance scattering peaks at 320, 400 and 595 nm respectively. The H2O2 concentration in the range of 0. 50-16. OX 10(-6) mol x L(-1) is proportional to the resonance scattering at 400 nm. And a new resonance scattering spectral method was described for the determination of H2O2 in water samples with satisfactory results. |
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| Keywords: | H2O2 Acridine red Association particle Resonance scattering |
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