The thing you want for your engines are the most volatile fractions, the liquids that boil off first, like gasoline and benzene.

It is a broad term covering among the lightest and most volatile fractions of the liquid hydrocarbons in petroleum.

It found that some 65 had been identified in the volatile fraction contained in the head space of irradiated meat.

Another 36 substances were identified in volatile fractions of other foods.

Safranal is less bitter than picrocrocin and may comprise up to 70% of dry saffron's volatile fraction in some samples.

"I am concerned for the volatile fractions," he said.

Spectral analysis of the least volatile fraction revealed the presence of krypton.

There was no market for the more volatile fraction, including gasoline, which was considered waste and was often dumped directly into the nearest river.

The lungs normally excrete the volatile fraction through ventilation, and acid accumulation does not occur.

The end of the volatile fraction is marked by the disappearance of the flame in the ignition furnace.