The Claim
Ascorbic acid induces hydrogen peroxide formation in copper-supplemented Milli-Q water and poorly buffered household drinking water under acidic conditions (pH 3.5–5), with 12 out of 48 tested drinking water samples exceeding 400 µM hydrogen peroxide after incubation.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
When ascorbic acid is added to water containing copper and at low pH levels, it produces hydrogen peroxide, and in 12 of 48 tested household water samples, the hydrogen peroxide concentration exceeded 400 micromolar after incubation.
See the scientific wording
Ascorbic acid induces hydrogen peroxide formation in copper-supplemented Milli-Q water and poorly buffered household drinking water under acidic conditions (pH 3.5–5), with 12 out of 48 tested drinking water samples exceeding 400 µM hydrogen peroxide after incubation.
In acidic water with copper, vitamin C donates electrons to copper ions, turning them into a more reactive form that grabs oxygen from the water and turns it into hydrogen peroxide. This reaction builds up high levels of hydrogen peroxide unless another metal like iron is present to break it down quickly.
What the research says
1 studyIn acidic water with copper, vitamin C can create a lot of hydrogen peroxide — and in 12 out of 48 real water samples tested, it did, exceeding 400 micromolar. The study proves this happens, just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.