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外文期刊>高等学校化学研究(英文版)
>13C NMR Quantitative Study-Part 1: Relationships between the Conformation of Amino Acids, Peptide, Carboxylic Acids and Integration Intensity of 13C NMR
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13C NMR Quantitative Study-Part 1: Relationships between the Conformation of Amino Acids, Peptide, Carboxylic Acids and Integration Intensity of 13C NMR
@@ In proton broad band decoupling 13C NMR, carbon atoms have different integration intensity because of NOE effects and their different relaxation time(T1), thus it makes a 13C NMR quantitative analyses very difficult. To acquire a 3C NMR quantitative analyses, a gated decoupling with suppressed NOE technology, i.e., an inversed gated decoupling pulse (IGDP), must be used. In IGDP relay time (tR) between two acquisition cycles must be more than 5T1, the time needed for a acquisition cycles is so long that makes the total 13C NMR quantitative analyses time much longer. For this reason, the 13C NMR quantitative analyses is paid less attention.
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机译:在质子宽带解耦13C NMR中,由于NOE效应和不同的弛豫时间(T1),碳原子具有不同的积分强度,因此使13C NMR定量分析非常困难。要获得3C NMR定量分析,必须使用具有抑制NOE技术的门控去耦,即反向门控去耦脉冲(IGDP)。在两个采集周期之间的IGDP中继时间(tR)必须大于5T1时,一个采集周期所需的时间是如此之长,以至于13 C NMR定量分析的总时间要长得多。因此,较少关注13 C NMR定量分析。
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