M. Miyashita, S. Yamashita
1989
Citations
0
Influential Citations
4
Citations
Journal
Journal of Chromatography A
Abstract
Abstract α-,β-,/gg- and dimethyl-β-cyclodextrin (CD) were used as mobile phase additives in a reversed-phase high-performance liquid chromatographic determination of iodide (I−). The retention of I− was decreased by the addition of CDs in mobile phases composed of hexyl-, heptyl- or octylammonium phosphate. The decrease in the retention was influenced by the molecular species and the concentration of CDs. Using 2 mM heptylammonium phosphate (pH 4.0) containing 2 mM β-CD as the mobile phase, determination of I− was performed with a UV detector at 226 nm. Good linearity of the calibration graphs and good reproducibility of repeated determinations were obtained for I− in the range 25 pmol (3.2 ng) to 12.5 nmol (1.6 μg).