The reason is that NAG is the net acid production calculated after the active S in coal gangue is oxidized by H2O2 to produce acid, and then neutralized with alkaline substances in the sample.
The reason is that NAG is the net acid yield calculated by neutralizing the reaction of the alkaline substance in the sample after the active S in coltan is oxidized by H2O2.
The reason is that nag is the net acid production calculated by the neutralization reaction between the active s in coal gangue and the basic substances in the sample after oxidation by H2O2.<br>