Methane is destroyed by reaction with an atmospheric "cleanser" called the hydroxyl free radical, or OH.    From Wordnik.com.  [News24] Reference

Methane can be destroyed, however, by reactions involving an atmospheric "cleanser" called the hydroxyl free radical (OH).    From Wordnik.com.  [Climate Ark Climate Change & Global Warming RSS Newsfeed] Reference

To the astronomers 'surprise, Spitzer picked up the signature of rapidly spinning fragments of water molecules, called hydroxyl, or OH.    From Wordnik.com.  [News and Features - NASA's Jet Propulsion Laboratory] Reference

So, in graphite, you have hydrogen or hydroxyl groups.    From Wordnik.com.  [Happy Birthday, Buckyballs!] Reference

By producing hydroxyl ions, ionized water helps to generate O2.    From Wordnik.com.  [The Health Benefits of Ionized Water] Reference

These contain the group, or radical OH, hydroxyl, once or oftener.    From Wordnik.com.  [The Dyeing of Woollen Fabrics] Reference

This would then lead to curious conclusions concerning the hydroxyl group.    From Wordnik.com.  [Scientific American Supplement No. 822, October 3, 1891] Reference

Dekker found six, Nierenstein five, and Herzig still fewer hydroxyl groups.    From Wordnik.com.  [Synthetic Tannins] Reference

ROBERTS: All right, so we don't have to memorize that 25 hydroxyl Vitamin D, ok?.    From Wordnik.com.  [CNN Transcript Jan 7, 2010] Reference

It is a scavenger of hydroxyl radicals and so influences the production of ozone.    From Wordnik.com.  [Chapter 8] Reference

There can therefore be neither hydrogen nor hydroxyl ions present in the solution.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

The hydrogen in the hydroxyl group, as is known, may be substituted by an alkyl group.    From Wordnik.com.  [Scientific American Supplement No. 822, October 3, 1891] Reference

If hydroxyl ions are in greater concentration, the solution is considered alkaline or basic.    From Wordnik.com.  [PH] Reference

~ A solution of potassium cyanide turns red litmus blue, and must therefore contain hydroxyl ions.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

The solution of ammonia in water is found to have strong basic properties and therefore contains hydroxyl ions.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

When a base dissolves in water the hydroxyl groups form the anions, while the metallic element forms the cations.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

Photochemical reactions with hydroxyl and chlorine radicals N2O Nitrification: NH4+→ ≈ 99% NO3 - + ≈ 1% N2O.    From Wordnik.com.  [Effects of changes in climate and UV radiation levels on function of arctic ecosystems in the short and long term] Reference

The hydroxyl group (OH -) is incorporated into one fragment and the hydrogen atom is incorporated into the other.    From Wordnik.com.  [Biotransformation] Reference

For instance, an alkyl may be substituted for the hydroxyl hydrogen in an alcohol molecule, when an ether results.    From Wordnik.com.  [Scientific American Supplement No. 822, October 3, 1891] Reference

Phenol has the functional hydroxyl group that is then conjugated by a Phase II reaction (sulphation) to phenyl sulfate.    From Wordnik.com.  [Biotransformation] Reference

At high temperatures, the carbonyl stretching vibration disappears and a hydroxyl stretching absorption appears instead.    From Wordnik.com.  [Chapter 7] Reference

They are distinguished from each other by prefixing the name of the element which is in combination with the hydroxyl group.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

During the normal processes that form bone, calcium and hydroxyl ions are incorporated into the hydroxyapatite-calcium matrix.    From Wordnik.com.  [Distribution of toxicants in the body] Reference

Damage is also caused by free aluminum ions, because aluminum-hydroxyl complexes are converted to free aluminum ions at low pH.    From Wordnik.com.  [Impact and abatement of acid deposition and eutrophication] Reference

Chemically, tannins are complex phenolic polymers containing aliphatic and phenolic hydroxyl groups and in some cases, carboxyl groups.    From Wordnik.com.  [Chapter 4] Reference

The glycoside, an off-white armophous powder, gave a dark blue colour with iron (III) chloride, a positive test phenolic hydroxyl groups.    From Wordnik.com.  [Chapter 7] Reference