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A. Part I Six silica-based ionically bonded chiral stationary phases consisting of cyanuric chloride with substituents an L-amino acid and a dialkylamine were prepared. These phases provide recognition ability to separate enantiomers of both methyl esters of N-(3,5-dinitrobenzoyl)-amino acids and N-(3,5-dinitrobenzoyl)-amino alcohols in high-performance liquid chromatographys. Generally, amino acids were separated more effectively than amino alcohols. A mechanism for chiral recognition with a liquid chromatography is discussed. B. Part II Micellar electrokinetic chromatography was used to separate different kinds of pyridine related compounds. Capillary zone electrophoresis was used to determine pKa values of hydroxymethylpyridine isomers as : 2-hydroxymethylpyridine(pKa = 4.70), 3-hydroxymethylpyridine(pKa = 4.78), and 4-hydroxymethylpyridine(pKa = 5.15). Capillary zone electrophoresis was also used to develop a new method for the analysis of commonly used copper corrosion inhibitors. At pH above 8 (excluding pH near 9.3) base line separation was easily achieved within 4 min. at an applied voltage of 25 kV. Internal standard method was utilized to determine contents of those inhibitors in two commercial formulations. The pKa values of four copper corrosion inhibitors were determined by capillary zone electrophoresis as: Benzotriazole(pKa =8.20), tolyltriazole(pKa =8.44), 5,6-dimethyl-1H-benzotriazole(pKa =8.65), and 2-mercaptobenzothiazole(pKa =6.76).
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