Quote Originally Posted by albada View Post
You'd also need to account for loss from the Fenton reaction, which is hard to predict. When adding ascorbate upon use, it may be best to assume that all the ascorbate has been destroyed.
IIRC, the Fenton reaction only catalyzes (read: speeds up) the destruction of Ascorbic Acid, but it is still aerial Oxygen (or whatever other oxidizer is around) which does the oxidizing.