Sure.
Let's begin:
Pros
1. Solutions produced from peroxide do not require the removal of excess oxidant--it decomposes on its own to water and oxygen gas.
2. Works well for in situ chlorine generation for digesting gold foils and gold powders. On bulk metallic gold, it's worthless if you don't have all month.
3. If added correctly (slowly), then the chlorine generated is almost entirely consumed in dissolving the values and it is less polluting than with nitric.
Cons
1. Brings molybdates and tungstates into solution which will then re-precipitate as colloidal gels of ill-defined composition, thus making filtering difficult
2. Requires the UTMOST in care in storage--hydrogen peroxide solutions, especially above 30% must be kept in scrupulously clean containers--any PGMs, silver, or iodides/bromides will dramatically destabilize it. Shelf life is limited.
3. Doesn't work too well on finely divided PGMs or any material containing silver which catalytically decomposes it. For instance, a platinum black slurry is better dissolved with sodium chlorate and 6M HCl at 60*C, than peroxide.
4. Dilutes the solution with its main constituent, water.
5. May have an induction period where nothing happens, then it goes berserk.
To be frank, hydrogen peroxide is best used for etchant solutions, finely divided gold powders/foils, or, preferably, to help with nitric digestions by recycling NOx back to HNO3.
Lou
