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中国科学院上海原子核研究所
收稿日期:1987-09-12,
纸质出版日期:1989-03
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张丽明, 郑冬珠, 袁建明, 等. 1H、2H核磁共振研究氘标记丙氨酸的标记位置及相对百分含量[J]. 核技术, 1989,12(3):149-152.
Liming Zhang, Dongzhu Zheng, Jianming Yuan, et al. Determination of positions and content of 2H in labelled alanine by 1H and 2H NMR spectroscopy[J]. Nuclear techniques, 1989, 12(3): 149-152.
本文利用质子及氘的核磁共振波谱技术研究氘标记丙氨酸的标记位置及相对百分含量,并指出:
1
H核磁共振利用波谱高度的下降间接证明氘被富集在分子上的结果具有不确定性,而
2
H核磁共振则是直观地观察到在相对应的质子谱线位置上氘被标记的信号并可计算各标记基团之间标记百分含量。
1
H NMR
used for structure analysis of
2
H labelled compounds only by peak area reduction in
1
H NMR spectrum
is restricted in a non-coupling proton system with
2
H content more than 10% otherwise the results will be obscure. As an improvement
2
H NMR is directly used to observe the
2
H NMR signal and calculate percentage of
2
H in every exchange group from the area of peaks. Deuteriated compounds were prepared by acid-catalyzed exchange at 135℃ in dilute acid media (DC1-D
2
O) and using PtO
2
.
2
H NMR parameters are as follows: resonance frequency of 15.25 MHz
pulse width of 7.5µs
pulse delay time of 200 ms
and noise decoupling of 0.5 kHz.
戴腾昌 等 , 稳定性同位素 ,( 1986 ), 3 : 11 。
E. A. Evans et al . , Handbook of tritium nmr spectroscopy and application , John, wilep & son Ltd. U.K. 1985 .
J. A. Elvidge and J. R. Jones , ed. , Isotope: Essential chemistry & application , Whitstable Litholed U. K. 1980 , p. 123 .
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