[Polarographic studies of heavy metal impurities in antibiotics with special reference to the preparation of penicillin and oxytetracycline].
D000900:Anti-Bacterial Agents; D003879:Dermatologic Agents; D008670:Metals / Q000737:chemistry*; D019216:Metals, Heavy; D010118:Oxytetracycline / Q000737:chemistry*; D010406:Penicillins / Q000737:chemistry*; D011048:Polarography
D000900:Anti-Bacterial Agents; D003879:Dermatologic Agents; D008670:Metals; D019216:Metals, Heavy; D010406:Penicillins; D010118:Oxytetracycline
METALS/chemistry; OXYTETRACYCLINE/chemistry; PENICILLIN/chemistry