caa a22 4500 37890714X CHVBK 20180305123532.0 cr unu---uuuuu 161128e20040401xx s 000 0 eng 10.1524/ract.92.4.259.35585 doi (NATIONALLICENCE)gruyter-10.1524/ract.92.4.259.35585 99mTc gel generators based on zirconium molybdate-99Mo: III: Influence of preparatory conditions of zirconium molybdate-99Mo gel on generator performance [Elektronische Daten] [P. Saraswathy, S. K. Sarkar, G. Arjun, S. K. Nandy, Natesan Ramamoorthy] The effect of subtle variations on zirconium molybdate-99Mo gel preparatory conditions, such as stoichiometry of reactants, pH of gel formation, conditioning of gel granules etc. , prior to elution were investigated primarily to arrive at the conditions resulting in high 99mTc release and minimal 99Mo breakthrough upon elution with normal saline. Zirconium molybdate- 99Mo gels were prepared by reacting solutions of Zr and Mo in mole ratios of 0.75-1.5. Both water and normal saline were used for gel disintegration, and the release of 99mTc and 99Mo from gel columns into eluates was compared. Sharper elution profile of 99mTc, but with significantly higher 99Mo breakthrough (5-8times), was obtained when water alone was used for disintegration and elution, in comparison to when saline was used. Gels exhibiting optimum characteristics were found to be formed at a pH of 4-5 by reacting [Zr]:[Mo] in the mole ratio of 1.25:1 and after drying, the product was dispersed into granules by disintegration with normal saline. 99mTc elution efficiency was found to be ∼75% and 99Mo breakthrough ∼0.05%. The elution profile was sharp when a 6g gel column coupled to a 2g acidic alumina column (to trap 99Mo) was eluted with 6-9ml normal saline. Generators containing upto 23GBq 99Mo were prepared, eluted extensively without changing the alumina column and found to provide pertechnetate of good quality, commensurate with hospital radiopharmacy requirements. © 2004 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Saraswathy P. aut Sarkar S. K. aut Arjun G. aut Nandy S. K. aut Ramamoorthy Natesan aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/4-6/2004(2004-04-01), 259-264 0033-8230 92:4-6/2004<259 2004 92 ract https://doi.org/10.1524/ract.92.4.259.35585 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.92.4.259.35585 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Saraswathy P. aut NATIONALLICENCE 700 1- Sarkar S. K. aut NATIONALLICENCE 700 1- Arjun G. aut NATIONALLICENCE 700 1- Nandy S. K. aut NATIONALLICENCE 700 1- Ramamoorthy Natesan aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/4-6/2004(2004-04-01), 259-264 0033-8230 92:4-6/2004<259 2004 92 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter