title: Magnesium chloride: an efficient 13C NMR relaxation agent for amino acids and some carboxylic acids.
abstract: 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.
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing 100084, PR China.
authors.forename: Jinping
authors.initials: J
authors.lastname: Tian
authors.forename: Yingwu
authors.initials: Y
authors.lastname: Yin
authors.forename: Hongbing
authors.initials: H
authors.lastname: Sun
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Luo
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D002264:Carboxylic Acids / Q000737:chemistry*; D004573:Electrolytes; D015636:Magnesium Chloride; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D015394:Molecular Structure
chemical_list: D000596:Amino Acids; D002264:Carboxylic Acids; D004573:Electrolytes; D015636:Magnesium Chloride