THE DETERMINATION OF THE PARAMAGNETIC SUSCEPTIBILITY OF SUBSTANCES IN SOLUTION BY NUCLEAR MAGNETIC RESONANCE
THE DETERMINATION OF THE PARAMAGNETIC SUSCEPTIBILITY OF SUBSTANCES IN SOLUTION BY NUCLEAR MAGNETIC RESONANCE
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DOI：
10.1039/jr9590002003
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发表时间：
1959-01-01
期刊：
影响因子：
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通讯作者：
EVANS, DF
中科院分区：
文献类型：
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作者：
EVANS, DF
作为惰性参考物质，将含有相同浓度的t-丁醇的毛细管也放入核磁共振管中，在测量过程中旋转核磁共振管。（由t-丁醇引起的溶解化合物的敏感性变化通常是完全可以忽略不计的。）由于两种溶液中t-丁醇的甲基质子的体积磁化率不同，通常会得到两条共振谱线，顺磁性较强的溶液产生的谱线频率较高。溶解物质的质量磁化率x由式给出
incorporated as an inert reference substance, and a capillary containing the same concentration of t-butyl alcohol in water is also placed in the nuclear magnetic resonance tube which is spun during the measurement.(The change in the susceptibility of the dissolved compound caused by the t-butyl alcohol will normally be completely negligible.) Two resonance lines will normally be obtained from the methyl protons of the t-butyl alcohol in the two solutions owing to the difference in their volume susceptibilities, with the line from the more paramagnetic solution lying at higher frequencies. The mass susceptibility, x, of the dissolved substance is then given by the expression