The selected washing solutions are 1 M HCl (Choi et al., 2007), 0.5 M H3PO4 (Cheong and Kang, 2012), and 2% Na dithionite in 0.01 M HCl (Kim et al., 2012)
The selected washing solutions are 1 M HCl (Choi et al., 2007), 0.5 M H3PO4 (Cheong and Kang,2012), and 2% Na dithionite in 0.01 M HCl (Kim et al., 2012)