1. 重庆大学城市建设与环境工程学院, 三峡库区生态环境教育部重点实验室，重庆 400030 2. 西南大学化学化工学院, 重庆 400715 3. Haskoning Nederland BV Division Building Services, Netherlands AH Nijmegen 6500
Study of Vibrational Spectra of Humic Substance in Soils from the Three Gorges Reservoir Area
HU Xue-bin1, JI Fang-ying1*, LI Si1, ZHOU Guang-ming2, YU Dan-ni2, TAN Xue-mei1, YANG Da-cheng2, YU Bing3
1. Faculty of Urban Construction and Environmental Engineering, Key Laboratory of the Three Gorges Reservoir Region’s Zco-Environment, Ministry of Education，Chongqing University, Chongqing 400030, China 2. School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China 3. Haskoning Nederland BV Division Building Services, Netherlands AH Nijmegen 6500
Abstract：The six typical different parts of soils and sediments along the bank of the Three Gorges Reservoir Area (TGRA) were collected, and the humic substance isolated from the six parts of the soils and sediments’ samples was separated to humic acid and fulvic acid, purified, and characterized with the combination of the Raman and IR vibrational spectroscopic technologies after cool-dried separation; through assigning the vibrational peaks in each part of the Raman and IR spectra of each sample part, the vibrational characteristics of the structures and the groups that belonged to the molecules of the humic acids and the fulvic acids in the soils and sediments of the TGRA were obtained; the changing features of the groups and structures in the humic acid and the fulvic aicd’s molecules from the different soils and sediments in the TGRA were discussed with the environmental impact factors such as soil humic degree, the conditions of different soils conference, using and/or cultivating models and water level fluctuations. From the experimental results, the vibrations about C—O, C—C, and poly-hydrogen bonds dominate in the structures and the groups of each part’ humic substance; the active vibration numbers in the upstream are more than in the downstream; the soil’s humic degree has great effect on the formation of the humic substances’ structures in soil’s humic substance; the soil used as agricultural cultivating mode showed higher humic degrees in the upstream parts of the TGRA. The effect of the water level’s fluctuation on the formation of the humic acid and fulvic aicd in the sediments of the TGRA is not obvious in the short time.
胡学斌1, 吉芳英1*, 黎 司1, 周光明2, 虞丹尼2, 谭雪梅1, 杨大成2, YU Bing3 . 三峡库区土壤腐殖质的振动光谱研究[J]. 光谱学与光谱分析, 2010, 30(05): 1376-1380.
HU Xue-bin1, JI Fang-ying1*, LI Si1, ZHOU Guang-ming2, YU Dan-ni2, TAN Xue-mei1, YANG Da-cheng2, YU Bing3 . Study of Vibrational Spectra of Humic Substance in Soils from the Three Gorges Reservoir Area . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(05): 1376-1380.
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