ENHANCED SIGNAL-TO-NOISE RATIOS IN THE NUCLEAR-MAGNETIC-RESONANCE ANALYSIS OF SOLIDS, USING LARGE-SAMPLE MAGIC-ANGLE SPINNERS

被引：11
|
作者：
ZHANG, M [1 ]
MACIEL, GE [1 ]
机构：
[1] COLORADO STATE UNIV,DEPT CHEM,FT COLLINS,CO 80523
来源：
ANALYTICAL CHEMISTRY | 1990年 / 62卷 / 06期
关键词：
D O I：
10.1021/ac00205a019
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A previously reported 2.5-cm3 magic-angle spinning (MAS) device Is shown to provide major enhancements In signal to noise ratlos (S/N) for single-pulse (SP) and cross-polarization (CP) MAS analyses with 13C, 15N, and 29Si at 4.7 T. The increased S/N makes it possible to obtain useful 15N CP-MAS spectra of synthetic polymers and proteins in natural abundance. A newly developed 6.0-cm3 MAS device dramatically Improves the efficiency of 29SI SP-MAS analyses of a variety of silicon-containing samples (e.g., ceramics, zeolites, silica), often making It possible to obtain analytically useful spectra with a single scan. © 1990, American Chemical Society. All rights reserved.
引用
收藏
页码：633 / 638
页数：6
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