Fig. 3From: Membrane-based microfluidic solvent extraction of Ga-68 from aqueous Zn solutions: towards an automated cyclotron production loopMn, Cu, Ni, Co and Fe contaminations in back-extracted solutions (plain = into 2 M HCl; crossed = into 6 M HCl) after extraction from 2 M Zn(NO3)2 solution in 0.01 M HNO3. Mn was below the detection limit of 10 ppb. Error bars represent one standard deviation of the mean (n = 3)Back to article page