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. 2019 Nov 18;9:16960. doi: 10.1038/s41598-019-53385-x

Figure 2.

Figure 2

Schematic of the semi-automated process of 211At isolation using a Te column. In the process two syringe pumps move the solvents and mixtures through valves (A–E). Numbered solutions are as follows: 1: 10 M HNO3; 2: air; 3: D.I. H2O; 4: 35% NH2OH⋅HCl; 5: 8 M HCl; 6: 1.5 M HCl; 7: 1 M NaOH. Waste 1: non-radioactive waste; Waste 2: radioactive waste. (Detailed description of equipment and reagents can be found in Fig. S1).