^𝟗𝟗mTc Generator Development: Up-to-Date ^𝟗𝟗mTc Recovery Technologies for Increasing the Effectiveness of ^𝟗𝟗𝐌𝐨 Utilisation

Table 4

Details of the methods of ^99mTc-pertechnetate concentration from the saline eluate of ^99mTc-pertechnetate (dual column concentration methods).

Scheme	Concentration process			^99mTc-generator column	References
	Elution	Interfering ions remover	^99mTc concentrator
1A	Step A: saline; Step B: saline	Cation exchange resin (Ag form)	Alumina, zircona, and MnO2 columns	Alumina	Ruddock (1978) [38]
1A	Step A: saline; Step B: saline	Cation exchange resin (Ag form) OnGuard-AG	BondElut-SAX column	Alumina	Blower (1993) [39]
1A	Step A: saline; Step B: saline	Cation exchange resin (Ag form) OnGuard-AG	QMA-SepPak column	Alumina	Knapp et al. (1998); [43, 44]
1A	Step A: saline; Step B: saline	Cation exchange resin (Ag form)	Functional sorbent (isosorb-FS-01) columns	Alumina	Le and Le (2013) [58]
1A	Step A: saline; Step B: saline	Cation exchange resin (Ag form)	MnO2, TiO2, ZrO2, ZT-11, ZT-31 sorbent columns	Alumina	Le et al. (2013) [40]
2A	Step A: saline; Step B: NaI solution	AgCl powder column	Anion exchange resin (Dowex-1 × 8) column	Large alumina	Chattopadhyay et al. (2002) [53]
3A	Step A: saline; Step B: Tetrabutylammonium bromide in methylene chloride	Not needed	Anion exchange resin (Dowex-1 × 8) column combined with solvent evaporator	Large alumina	Chattopadhyay and Das (2008); [52]