GMELIN Leopold

From Big Medical Encyclopedia

GMELIN Leopold (Gmelin Leopold, 1788 — 1853) — the German chemist. Got an education in the Goettingen, Tuebingen and Vienna high fur boots. From 1814 to 1851 professor un-that in Heidelberg.

The main scientific works of L. Gmelin are devoted to organic chemistry. It entered the term «ketones» for designation of the corresponding class of connections, taurine from bile of bulls is received (1824). The technique of detection of bilious pigments developed by it in blood and in urine is used in a wedge. to practice (see. Gmelina test ). Called by the name of Gmelin the red prussiate of potash received by it in 1822 — red blood salt [K 3 Fe(CN) 6 ] — as a result of impact of chlorine on yellow blood salt [K 4 Fe(CN) 6 ]. L. Gmelin was one of opponents of atomic theory: it opposed to the theoretical concept «atom» the empirical concept «equivalent». Its «Guide to theoretical chemistry» (1817 — 1819), a cut fullestly lit a condition of chemistry of that time, brought to the author big popularity in science. However the numerous facts collected in this work were stated noncritical and often from the wrong theoretical positions. The part of its management containing data on inorganic chemistry in the processed and added look repeatedly was republished. The last (8th) edition which is the fullest reference book on inorganic chemistry was published in 1924.

Works: Handbuch der theoretischen Chemie, Bd 1 — 8, Heidelberg, 1841 — 1845; Lehr-buch der Chemie, Heidelberg, 1844; Handbuch der anorganischen Chemie, System-Nummer 1—70, 8. Aufl., Lpz. — B., 1924.

Bibliography: Walden P. The Gmelin chemical dynasty. J. chem. Education, v. 31, p. 534, 1954.