Väyrynen T, Näsman P, Kiviniitty K
Eur J Nucl Med. 1981;6(6):269-71. doi: 10.1007/BF00251351.
Owing to contamination by long-lived radio-isotopes, the residual activity of an old 99Mo-99mTc generator may be large enough to prevent its disposal. The long-lived impurities of one generator were determined by energy spectrum and half-life measurements. In this generator 46Sc, 51Cr, 60 Co, 92mNb, 95Nb and 124Sb nuclides were found. Only the half-life of 60Co exceeds 3 months, thus a moderately long storage of the generator reduces the activity, and its disposal is then safe.
由于受到长寿命放射性同位素的污染，一台旧的99Mo-99mTc发生器的剩余活度可能大到足以阻止其被处置。通过能谱和半衰期测量确定了一台发生器的长寿命杂质。在这台发生器中发现了46Sc、51Cr、60Co、92mNb、95Nb和124Sb核素。只有60Co的半衰期超过3个月，因此将发生器适度长时间储存会降低其活度，然后处置就安全了。
