Abstract
The problem of contamination of tartar emetic with arsenic and lead was examined using the radioactive isotopes, 76As and 209Pb. Neutron activation and radiochemical separation methods have been applied for the determination of arsenic and lead concentrations throughout the different stages of tartar emetic synthesis. It has been shown that, while most of arsenic is eliminated during the synthesis process, the major portion of lead remains in the final product. It was also found that the two impurities can be eliminated by successive washing of the starting materials with 0.2 M nitric acid and water. Tartar emetic synthesized from purified starting materials conforms to the requirements in pharmacopeias. The problem of contamination of tartar emetic with arsenic and lead was examined using the radioactive isotopes, 76As and 209Pb. Neutron activation and radiochemical separation methods have been applied for the determination of arsenic and lead concentrations throughout the different stages of tartar emetic synthesis. It has been shown that, while most of arsenic is eliminated during the synthesis process, the major portion of lead remains in the final product. It was also found that the two impurities can be eliminated by successive washing of the starting materials with 0.2 M nitric acid and water. Tartar emetic synthesized from purified starting materials conforms to the requirements in pharmacopeias.
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