Systematic comparison of post-column isotope dilution using LC-CO-IRMS with qNMR for amino acid purity determination

Analytical and Bioanalytical Chemistry - Determination of the purity of a substance traceable to the International System of Units (SI) is important for the production of reference materials...     

Synthesis and Study of Some New Co(II) Polyphosphinates Determination of the Kinetic Parameters for the Thermal Decomposition Reactions

This paper reports the synthesis and study of some Co(II) coordination polymers with the following acids as ligands: 2,8-dimethylphenoxyphosphinic, diphenyloxyphosphinacetic, diphenylthiophosphinacetic and dihexylphosphinic acids. The study was performed by means of chemical analysis, gel chromatography, IR spectroscopy, ESR, X-ray diffraction, thermogravimetry and electric resistance measurements. The experimental results were used to propose the structural formulae of these compounds and to calculate the kinetic parameters of the thermal decomposition reactions. This revised version was published online in July 2006 with corrections to the Cover Date.