Does Boiling Water Remove Fluoride?
If you’re wondering if you can boil fluoride out of water, the answer to this question is no. The fluoride will become more concentrated by boiling or even leaving it on a hot plate for an extended period of time.
When boiling water, you're trying to remove the fluoride ion before drinking, rather than the element fluorine. Because you're not dealing with the intact compound, it is impossible to boil out fluoride completely.
Although boiling water doesn’t actually remove fluoride, other methods actually work:
Methods That Work
To distill the water, you'll need to boil it, collect the vapor, then chill the vapor until it turns into liquid. This method involves boiling. However, boiling your H20 by itself will not distill it.
Pour running water across activated alumina to capture the presence of fluoride.
Reverse osmosis involves putting water through a semipermeable membrane, which leaves ions on one side. This makes the water have a lower concentration.
Methods That Don't Work
Contrary to popular belief, some methods do not actually lower fluoride concentration. Filters and freezing don't affect the amount of fluoride in H20.
Using nonstick cookware can also increase concentration in your foods. Because the nonstick coating used is made out of a fluorine compound, it can leak into water and the foods you're cooking.
Lots of people think you can boil fluoride out of water, but you can’t. Boiling actually increases the concentration of ions. However, if you boil water to condense it, you will decrease the amount of this mineral.
Try one of the above methods to reduce the ion concentration in your H20!