Figure 2

Colour change in (a) Biotic and (b) Abiotic reduction of SeO32−, Profiles for (c) Biotic reduction and formation and (d) Abiotic reduction and formation.
Colour change in (a) Biotic and (b) Abiotic reduction of SeO32−, Profiles for (c) Biotic reduction and formation and (d) Abiotic reduction and formation.