| 吸收光度法中的峰位移 |
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| 引用本文： | 黄泽南,彭激文. 吸收光度法中的峰位移[J]. 分析测试学报, 2010, 29(9). DOI: 10.3969/j.issn.1004-4957.2010.09.005 |
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| 作者姓名： | 黄泽南 彭激文 |
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| 作者单位： | 1. 湖南科技大学,化学化工学院,湖南,湘潭,411201
2. 湘潭市计量测试所,湖南,湘潭,411100 |
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| 摘 要： | 该文从吸收干扰、单色光性质及被测物吸收特性改变三个方面探讨了吸收光度法中吸收峰位移的原因、影响及其消除与应用。重点论述了吸收干扰中的相长与相消干扰引起的吸收峰位移规律。该规律为研究试剂与溶剂中杂质、样品中共存物、反应试剂与产物等的吸收干扰引起被测吸收峰位置、高度及形状的变化提供了理论依据。运用被测物标准溶液的正、负吸光度吸收曲线提供的信息与吸收峰位移规律研究吸收光度法应用的新方法,为定量分析、消除共存物干扰、化学反应及试剂选择性等研究提供了新手段。作为峰的相长与相消干扰引起的测定峰位移规律也适用于检测峰的其它仪器分析。
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| 关 键 词： | 吸收干扰 吸收峰位移规律 正负吸光度吸收曲线 相长干扰 相消干扰 |
Absorption Peak Shifting in Absorption Spectrophotometry |
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| HUANG Ze-nan,PENG Ji-wen. Absorption Peak Shifting in Absorption Spectrophotometry[J]. Journal of Instrumental Analysis, 2010, 29(9). DOI: 10.3969/j.issn.1004-4957.2010.09.005 |
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| Authors: | HUANG Ze-nan PENG Ji-wen |
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| Affiliation: | HUANG Ze-nan1,PENG Ji-wen2(1.College of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China,2.Xiangtan Measurement Institute,Xiangtan 411100,China) |
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| Abstract: | The reason and effect of absorption peak shifting and its elimination and application in absorption spectrophotometry were discussed in terms of variations of absorption interference,monochromatic light property and analyte absorption characteristic.The regularity of analyte absorption peak shifting induced by constructive and destructive interferences were mainly discussed.The regularity provided a theorectical basis for the investigation of the variations of the determined peak location,peak height and sh... |
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| Keywords: | absorption interference absorption peak shifting absorption curve with positive and negative absorbance constructive interference destructive interference |
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