Figure 6. Spot analysis of cobalt(II) nitrate in the Whatman grade 41 filter paper (a) before addition of NH4OH (b) after addition of 5% and 10% NH4OH solution

From

Metal Ions Separation Via Paper Chromatography: Enhanced Methods Using Eluting Solutions

Arijit Das, Digvijoya Sarmaa, Paresh Debnath, Bijaya Paul

World Journal of Chemical Education. 2023, 11(4), 134-140 doi:10.12691/wjce-11-4-2