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Citation: Li Rui-Hua, Jiang Zhan-Peng, Yang Hong-Wei, Guan Yun-Tao. Effects of Ions on Chemical Shift of ¹⁷O-NMR(δ(H₂¹⁷O)) and Water Structure[J]. Acta Physico-Chimica Sinica, ;2004, 20(01): 98-102. doi: 10.3866/PKU.WHXB20040121 shu

Effects of Ions on Chemical Shift of ¹⁷O-NMR(δ(H₂¹⁷O)) and Water Structure

1.
Department of Environmental Science and Engineering, Tsinghua University, Beijing　100084

Received Date: 6 June 2003
Available Online: 15 January 2004

In the concentration of 0~1 mol•L-1 ,the chemical shift of 17O-NMR （δ(H217O)）in aqueous solutions of alkali chloride, alkaline earth chloride, sodium halide or some common oxysalt were measured. It is found thatδ(H217O) depends on ion radius, ion charge, outside electron structure of ion and structure of ion. As the other parameters of ions keep unchanged, the larger the ion radius, the more the molarδ(H217O) of the ion is. With the same outer electron structure of ion, the more the ion charge, the more the molarδ(H217O) of the ion is. The molarδ(H217O) of multiple atom ion correlate with the structure of ion much more. It is deduced that the molar δ(H217O) of ion correlate with the effect of ion on water structure. The more the molarδ(H217O) of the ion, the intenser the effect of the ion on promoting water structure.
- Ion;Chemical shift;¹⁷O－NMR;Water structure
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Effects of Ions on Chemical Shift of 17O-NMR(δ(H217O)) and Water Structure

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通讯作者: 陈斌, bchen63@163.com

Effects of Ions on Chemical Shift of ¹⁷O-NMR(δ(H₂¹⁷O)) and Water Structure