Water enrichment by H2O ortho-isomer: Four-photon and NMR spectroscopy
Water enrichment by H2O ortho-isomer: Four-photon and NMR spectroscopy
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DOI：
10.1134/s1054660x09030104
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发表时间：
2009-03-01
期刊：
影响因子：
1.2
通讯作者：
Pirogov, Yu. A.
中科院分区：
文献类型：
--
作者：
Pershin, S. M.;Bunkin, A. F.;Pirogov, Yu. A.
采用瑞利翼四光子光谱和核磁共振（NMR）技术研究了不同处理方式（蒸馏水和空化喷泉）水中H2O正旋/对旋异构体的比例。在0.1-1.5 cm(-1) （3-45 GHz）光谱范围内观察到低频气体状旋转共振，并测量了两种水样的核磁共振质子密度。我们建立了四光子光谱测量的邻位异构体线(6(16)-5(23))0.74 cm（-1）的强度在蒸馏水空化处理后增加了3.5倍。此外，在相同的样品中，核磁共振光谱测量的质子密度增加了17%。我们认为，邻水分子富集蒸馏水是由于水经过超临界状态时空化气泡破裂所致。
Ratio of H2O ortho-/para-spin-isomers in water of different treatment procedures (distilled or cavitation fountain) were studied by both Rayleigh wing four-photon spectroscopy and H-1 nuclear magnetic resonance (NMR) spectroscopy. Low-frequency gas-like rotational resonances were observed in the 0.1-1.5 cm(-1) (3-45 GHz) spectral range and NMR proton density was measured in both water samples. We established that the intensity of ortho-isomer line (6(16)-5(23))0.74 cm(-1) measured by four-photon spectroscopy increases by factor of similar to 3.5 after cavitation treatment of distilled water. Moreover, the proton density measured by NMR spectroscopy in the same sample grows on similar to 17%. We have suggested that the enrichment of the distilled water by ortho-H2O molecules was achieved due to cavitation bubbles collapse when the water passes through the supercritical state.