Electroanalysis

Algumas aplicações analíticas dos ultra-sons

“…As modificações físicas e químicas resultantes da cavitação acústica têm impulsionado novas estratégias de preparo de amostras [4][5][6][7][8] e, em sistemas heterogêneos, o tratamento é favorecido devido aos seguintes fenômenos [9][10][11][12].…”

Self-actualization and the analytical chemist

“…In his article "Treating the Analytical Chemist as a Person," F. P. Boer (2) describes the philosophical revolution in the industrial practice of analysis and measurement which transformed the traditional analyst (3,4), concerned with techniques and the question of numbers, to an analytical scientist, highly skilled in all aspects of problem solving (5)(6)(7). This revolution in analytical thinking roughly correlates with the decline of industrial synthetic organic research in the late 1960's.…”

Separations with a Mercury Electrode

“…Deposition of metallic ions at controlled potentials has long been used as a method to separate metals selectively. Recently the development of adequate instruments to control the cathode potential automaritally has stimulated renewed interest in this method (15,16). The reverse process, selective stripping of metals from an electrode into a solution at controlled anode potential, has not been similarly exploited for analytical separations.…”

“…However, Kozlovskii and co-workers (17) have recently reported amalgam methods of separation for macro quantities of nonferrous metals which utilize controlled anodie oxidation. Moreover, anodic dissolution has been used for many years to dissolve solid alloy samples, to measure the thickness of plated coatings, and to determine nomnetallie inclusions in metals (15).…”