Sampling Methods for Quantification of Solid-state Phases in Powder Samples with Solid-state NMR Spectroscopy

Bulletin of the Korean chemical society

Tae Jung Ko¹  Oc Hee Han¹  Sun Ha Kim¹ 

关键词: Solid-state NMR;    Quantification;    Solid-state phase;    Powder sample;    Polymorph;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

To minimize the variance in the quantification of solid-state phases in powder samples, gently placing polycrystalline samples one next to another directly in a sample holder is better than trying to mix them homogeneously prior to transferring to a sample holder. However, the solid-state cross polarization-magic angle spinning (CP-MAS) nuclear magnetic resonance (NMR) spectroscopy results demonstrated that it is essential in this sampling method to place all the samples in the location of consistent signal sensitivity. The same sampling method may be employed in other spectroscopic quantification techniques of solid-state phases if the method to limit the sample to the location with uniform signal sensitivity in the sample holder is adapted to each technique.

【 授权许可】

Unknown