Местоположение издательства:New York, United States
Первая страница:3077
Последняя страница:3089
Аннотация:Comparison of approaches describing retention of deoxynucleosides (dCyd,d dUrd,dGuo, dThd, and dAdo) as a function of the mobile phase composition has been performed.The valume fraction(F)of metynol and acetonitril,respectively. Linear regression has been carried out for the following equations: logk'=logk'w-S×F (1), log k'=H+Klog(1/F), (2), k'=A+ B(1/F) (3),where k' is capacity fsctor, and log k'w, S, H, K, A and B are experimental coefficients. The best fits were obtained for the eqns. (1) and (3), and the poorest correlations were obtained for eqn.(2). The slope ratios B metyanol/Bacetonitrile, and
S acetonitrile/S methanol are charnged in comparatively narrow rannges with average values of 2.86 and 2.30 respectively. Unlike the slope S of eqn. (1), the slope B of eqn. (3) can characterrize the properties of solute and organic modifier simultaneously. For each solute, the intercepts A calculated for acetonitrile and methanol as organic modifiers are coefficints of eqn. (3) to express the deoxyriboucleside properties.