| 光谱学与光谱分析 |
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| Study of Determination of Phenol Derivatives Based on Ultraviolet Absorption Spectra |
| JUAN Ying-hua1, 2, WU Zhi-jie1*, CHEN Li-jun1 |
1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract The ultraviolet absorption spectra of phenol and its derivatives were studied under water solution condition. The results show that the introduction of 2-, 3- and 4- substituent of group leads to a bathochromic shift of position of the maximum absorption wavelength λmax, and also increases the molar extinction coefficient εmax. However, the extent of influence of substituent of group on λmax and εmax differs with the introduction position. Compared with 2- and 3- substituent, the 4- substituent induces a bathochromic shift of λmax and the increase of εmax more greatly, due to the more formation of conjugated structure between 4- substituent of group and benzene ring. The characteristics of 4-nitrophenol’s λmax and εmax supply evidence that nitro is a better auxochrome for phenol derivatives. So UV methods were established for the determination of the contents of phenol derivatives. Using these methods, the adsorptive percentage of four phenol derivatives with εmax＞10 000 was determined, which indicates that phenol derivatives have larger adsorptive percentage in soils with heavy texture, and the solution of inorganic compound with larger concentrations could increase its adsorptive percentage.
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Received: 2008-05-28
Accepted: 2008-08-29
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Corresponding Authors:
WU Zhi-jie
E-mail: wuzj@iae.ac.cn
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