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Show Automaton Chemist Analyzes Solutions Vienna. A chemical "robot" into which one pours an electrolytic elec-trolytic solution to be analyzed and then receives a printed answer an-swer in a few minutes has been demonstrated before the faculty fac-ulty and chemical students at the university here by Dr. Hans Horn, former Viennese chemist chem-ist now living in Germany at Cologne-Bay en thai. Dr. Holm's chemical analyzer is known as the Polarograph and operates by using the known chemical fact that the electric potential po-tential or voltage decreases as a solution is being disassociated during dur-ing electrolysis. What really pops out of the small black box, after an unknown electrolyte has been poured in, is the graph showing how electrical potential across the solution varies with time. From such potential curves (Polarograms) the trained chemical operator can quickly calculate cal-culate the qualitative, and quantitative quantita-tive analysis of the investigated material. |