| 5‘—硝基水杨基荧光酮双波长标准加入分光光度法同时测定？… |
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| 引用本文： | 郭忠先,黎明波.5‘—硝基水杨基荧光酮双波长标准加入分光光度法同时测定？…[J].光谱学与光谱分析,1998,18(2):247-251. |
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| 作者姓名： | 郭忠先 黎明波 |
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| 作者单位： | 四川轻化工学院化学工程系 |
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| 摘 要： | 在０．３－０．９ｍｏｌ／Ｌ硫酸介质中，在溴化十六烷基三甲铵存在下，５’－硝基水杨基荧光酮与锗和钼形成最大吸收波长分别为５１３和５３３ｎｍ的红色配合物，其吸收光谱严重重叠。基于此，本文采用双波长标准加入法对该混合物的显色体系进行了研究，建立了同时分光光度测定锗和钼的新方法，并与等吸收双波长法作了比较。
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| 关 键 词： | 锗 钼 双波长光度法 硝基 水杨基 荧光酮 测定 |
Simultaneous determination of germanium and molybdenum in mixtures by complexation with 5'-nitrosalicyfluorone and dual-wavelength standard addition spectrophotometry] |
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| Z Guo,M Li,S Zhang.Simultaneous determination of germanium and molybdenum in mixtures by complexation with 5''-nitrosalicyfluorone and dual-wavelength standard addition spectrophotometry][J].Spectroscopy and Spectral Analysis,1998,18(2):247-251. |
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| Authors: | Z Guo M Li S Zhang |
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| Institution: | Department of Chemical Engineering, Sichuan Institute of Light Industry and Chemical Technology, 643033 Zigong. |
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| Abstract: | In the presence of hexadecyltrimethylammonium bromide and in a medium of 0.3-0.9mol/L sulfuric acid, germanium (IV) and molybdenum (VI) react with 2,6,7-trihydroxy-9 (2'-hydroxy-5'-nitro) phenylfluorone-3, i.e., 5'-nitrosalicyfluorone, to develop red complexes, respectively. The spectra of the two complexes overlap seriously each other, and the additivity of their absorbances is good in the wavelength range of 490-548nm. So a new method for simultaneous spectrophotometric determination of germanium and molybdenum by dual-wavelegth standard addition method has been investigated in detail. The analytical results of five standard mixtures are more accuracy than those obtained by isobestic-point dual-wavelength method. The method has been applied to the analysis of traditional chinese medicine and mineral water with satisfactory results. |
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