In order to prevent atmospheric oxidation during chemical dissolution of the sample, ammonium metavanadate is added to the digestion mixture. As soon as ferrous iron is released from the rock matrix, it reacts as follows:
Vv O2 + + Fe2+ + 2H+→ VivO2+ + H2O + Fe3+
The reduced form of vanadium (VivO2+) is stable to atmospheric oxidation.
[see Potts, P.J. (1987). A handbook of silicate rock analysis. Page 68]
Category: Decomposition techniques
The different kinds of analytical decompositions have been classified hierarchically. Examples: “fusion”, “acid” Taken from the “Analytical_Decompositions_SHARED” database table.
Associated Analytical Suites:
|Index||Suite ID||Suite Name|
|1||629||ActLabs 4F-FeO – FeO by titration|
Associated Analytical Packages:
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