Biography Category
Name :
Marggraf, Andreas Sigismund
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Birth Date :
01/01/1970
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(ändr ´äs z ´g sm nt märk´gräf´´) (KEY) , 1709–82, German chemist, a pioneer in analytical chemistry. He proved that alumina, magnesia, and lime are distinct earths, found (1743) an improved method for the commercial preparation of phosphorus, and isolated (1746) zinc. In 1747 he announced his discovery of sugar in the beet. Marggraf directed, from 1754, the chemical laboratory of the Berlin Academy of Sciences.
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