The polarograms, the current-pH, E½-pH, current vs √h, current-concentration plots and slopes of log ī vs. log h (uncorrected) plots of active components of Artemisia maritima leaf- and ...flowerextracts in 1% HClO4 solution prove the irreversible diffusion-controlled nature of limiting currents, similar to those of santonin. Milli-coulometry proves a two-electron process at pH values of 4.5 and 9.3. Calibration curve (limiting current vs concentration) of santonin at pH 5.3 shows that the air-dried leaves and flowers of the plant contain 0.96% and 0.98% of santonin respectively.
