Magnesium chloride: an efficient 13C NMR relaxation agent for amino acids and some carboxylic acids.
A series of amino acids and carboxylic acids were determined by 13C NMR spectroscopy. The results showed that addition of 3 M MgCl(2), led to shortening of relaxation time and 13C NMR integral area of samples was well proportional to the number of carbon atoms with reliability more than 95%. So MgCl(2) is proposed as an efficient relaxation agent for analysis of amino acids and some carboxylic acids.
Tian
Jinping
J
Department of Chemistry, Tsinghua University, Beijing 100084, PR China.
Yin
Yingwu
Y
Sun
Hongbing
H
Luo
Xiaofeng
X
D000596:Amino Acids / Q000737:chemistry*; D002264:Carboxylic Acids / Q000737:chemistry*; D004573:Electrolytes; D015636:Magnesium Chloride; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D015394:Molecular Structure
D000596:Amino Acids; D002264:Carboxylic Acids; D004573:Electrolytes; D015636:Magnesium Chloride