Effect of 1,4-dioxane on the conductance and ion-pairing of hydrogen chloride in wet and dry methanol mixtures at 25 °C

Ionic equilibria of picric acid in mixed amphiprotic solvents. The 2-methoxyethanol/water solvent system

“…The specific conductances of the solvents at each temperature were used in order to correct the experimental data. The so corrected values were analyzed by the method of Fuoss and Hsia (13,14), modified in order to take into account the variation with density of the solutions' concentrations. The equation…”

“…As recently as 1980, it was thought that "gradient elution cannot be used with electrochemical detectors" (2). Since that time many researchers have found that the two can be compatible (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). To our knowledge, all of the published work on this topic has involved amperometric detection.…”

“…EXPERIMENTAL SECTION Apparatus. The chromatographic system used in this work has been described in detail elsewhere (14,17). Briefly, the gradient was provided to the column by a Waters 600E Multisolvent Delivery System used at a flow rate of 1 mL/min.…”

“…Derivatization of Leucine. Leucine was derivatized to form an electroactive compound using NDA (14,(21)(22)(23). To 100 pL of 10"2 M leucine was added 100 pL of 0.1 M cyanide, followed by 200 pL of 0.01 M borate buffer (pH 9.5) containing 20% methanol.…”