| 17O-NMR与拉曼光谱法研究CuCl2和CuSO4对水结构的影响 |
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| 引用本文： | 阎波,赵林,王文华,谭欣. 17O-NMR与拉曼光谱法研究CuCl2和CuSO4对水结构的影响[J]. 环境化学, 2009, 28(3): 432-436 |
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| 作者姓名： | 阎波 赵林 王文华 谭欣 |
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| 作者单位： | 天津大学环境科学与工程学院,天津,300072;天津大学环境科学与工程学院,天津,300072;天津大学环境科学与工程学院,天津,300072;天津大学环境科学与工程学院,天津,300072 |
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| 摘 要： | 利用17O-NMR化学位移、半峰宽和核磁共振系数(B')与水团簇结构和水分子缔合的关系,分析了Cucl2和CuSO4对水结构的影响,同时比较了纯水和不同浓度CuCl2和CuSO4溶液的羟基伸缩振动拉曼光谱,研究表明,CuCl2和CuSO4均具有促进水分子缔合,使水团簇加大的作用,且CuSO4对水的缔合作用大于CuCl2,Cl-对水缔合的破坏作用大于SO2-4.Cu2+作为顺磁离子,在核磁共振弛豫过程中,对缩短水中质子的自旋-晶格弛豫时间,使谱线变宽作用明显,拉曼光谱主要反映阴离子对水结构的影响,而17O-NMR方法能够全面反映阴、阳离子和化合物对水缔合程度的影响.
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| 关 键 词： | CuCl2 CuSO4 17O-核磁共振 拉曼光谱 水结构. |
THE INFLUENCE OF CuCl_2,CuSO_4 UPON THE WATER STRUCTURE WITH ~(17)O-NMR AND RAMAN SPECTRA |
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| YAN Bo,ZHAO Lin,WANG Wen-hua,TAN Xin. THE INFLUENCE OF CuCl_2,CuSO_4 UPON THE WATER STRUCTURE WITH ~(17)O-NMR AND RAMAN SPECTRA[J]. Environmental Chemistry, 2009, 28(3): 432-436 |
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| Authors: | YAN Bo ZHAO Lin WANG Wen-hua TAN Xin |
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| Affiliation: | School of Environment Science and Engineering;Tianjin University;Tianjin;300072;China |
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| Abstract: | The influences of CuCl2 and CuSO4 upon the water structure were studied with 17O-NMR and Raman spectra. The effects of CuCl2 and CuSO4 on 17O-NMR chemical shift,half-height widths of peaks and spin-lattice relaxation times(T1) of water were tested at low concentrations. With the relationship between 17O-NMR chemical shift, half-height widths of peaks, NMR B'-coefficients and water cluster structure, water association, the effect of CuCl2 and CuSO4 on water structure were analyzed. Raman spectra in the OH st... |
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| Keywords: | CuCl2 CuSO4 |
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