| 原子吸收自吸背景校正中杂散光的研究Ⅰ——杂散光的性质及其对背景校正性能的影响 |
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| 引用本文： | 刘瑶函,刘志高,周治,王伟,赵永强,宋军.原子吸收自吸背景校正中杂散光的研究Ⅰ——杂散光的性质及其对背景校正性能的影响[J].光谱学与光谱分析,2009,29(2). |
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| 作者姓名： | 刘瑶函 刘志高 周治 王伟 赵永强 宋军 |
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| 作者单位： | 1. 上海光谱仪器有限公司,上海,200233
2. 河北省林业技术推广总站,河北,石家庄,050081 |
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| 基金项目： | 上海市科委登山行动计划科学仪器专项基金 |
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| 摘 要： | 在自吸背景校正中不被样品基体吸收的杂散光有不同于氘灯和塞曼背景校正的特殊性.用截止溶液法检验了杂散光的存在,并用重铬酸钾溶液分子吸收模拟背景吸收的方法研究了杂散光的影响.源于空心阴极灯光源的杂散光在样品束(常规脉冲低电流)和参比束(窄脉冲高电流)中的比率有很大的差异,前者比后者更高.这种差异是自吸背景校正误差的重要来源,在高背景校正时引起的误差不容忽视.文章还对杂散光比率与灯电流、光能量和光谱带宽等方面的关系进行了研究.结果表明,杂散光比率与灯电流大小有很大关系,灯电流大,杂散光比率小,但杂散光比率随灯电流的变化与被检测的分析线能量无直接关系;杂散光比率随着光谱带宽的减小而降低,其性质类同于连续光谱.
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| 关 键 词： | 原子吸收 自吸 杂散光 背景校正 |
Study on Stray Light in Self-Reversal Background Correction for Atomic Absorption Spectrometry-The Properties of Stray Light and Its Influence on Background Correction |
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| LIU Yao-han,LIU Zhi-gao,ZHOU Zhi,WANG Wei,ZHAO Yong-qiang,SONG Jun.Study on Stray Light in Self-Reversal Background Correction for Atomic Absorption Spectrometry-The Properties of Stray Light and Its Influence on Background Correction[J].Spectroscopy and Spectral Analysis,2009,29(2). |
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| Authors: | LIU Yao-han LIU Zhi-gao ZHOU Zhi WANG Wei ZHAO Yong-qiang SONG Jun |
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| Institution: | LIU Yao-han 1,LIU Zhi-gao 1,ZHOU Zhi 1,WANG Wei 1,ZHAO Yong-qiang 1,SONG Jun 2 1.Shanghai Spectrum Instruments Limited Company,Shanghai 200233,China 2.The Station of Technology Promotion,Bureau of Hebei Forestry,Shijiazhuang 050081,China |
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| Abstract: | In self-reversal background correction the particularity of stray light that is not absorbed by the sample matrix is different from that in deuterium lamp and Zeeman background correction.The stray light is evaluated using the cut-off solution method and its effects were studied by means of simulation background absorption using potassium dichromate solution molecular absorption.Experiments confirmed that the stray light due to light source for the sample beam(Conventional pulse,low Current) and reference b... |
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| Keywords: | Atomic absorption Self-reversal Stray light Background correction |
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