Radiation Chemistry of Simulated 99Mo Product

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• 作者：Susan D. Carson ; David R. Tallant ; Marion J. McDonald ; Manuel J. Garcia ; and Regina L. Simpson
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2000
• 出版时间：September 2000
• 年：2000
• 卷：39
• 期：9
• 页码：3151 - 3156
• 全文大小：71K
• 年卷期：v.39,no.9(September 2000)
• ISSN：1520-5045

文摘

Pharmaceutical houses that produce ^99mTc/⁹⁹Tc generators have on occasion received productsolutions of ⁹⁹Mo produced from ²³⁵U fission that contained a black precipitate. Addition of sodiumhypochlorite to product bottles prior to shipment prevents precipitate formation, which is evidencethat the precipitate is most likely a reduced form of Mo. The radiation effects of the dose from⁹⁹Mo on the product and product bottle have been determined by irradiating simulated ⁹⁹Moproduct solutions with the ⁶⁰Co source at Sandia National Laboratories' Gamma IrradiationFacility (GIF). The GIF experiment successfully generated a black precipitate in amountssufficient for isolation and analysis by infrared and Raman spectroscopy. Changes in the pH ofthe basic ⁹⁹Mo product solution during irradiation were monitored by titration. Results of theseanalyses and the nature of the process that generates the precipitate, a mixture of molybdenumoxides that forms in plastic bottles but not in glass containers, are discussed.