Assertion: hydrogen peroxide | /r/HasProperty | added
Facets:
value: each week
type: TEMPORAL
Source sentences:
text: That’s a big difference, especially when you consider how much hydrogen peroxide must be added each week.
text: Hydrogen peroxide may only be used in cyanidation provided that it is diluted to a concentration of 0.5-5% H2O2 by weight before it is added, since the decomposition reaction is much faster than the detoxification reaction under these conditions.
text: A sulfide monitor is desirable to make certain that the effluent is free from sulfide, an indication that enough hydrogen peroxide has been added to complete the oxidation.