hydrogen sulphide BrE
hydrogen sulfide AmE

It is the result of a test for hydrogen sulfide.

In the study, they made use of a common gas, hydrogen sulfide.

In particular, we are certain that they did not contain hydrogen sulfide.

People were sure it was the hydrogen sulfide they smelled.

Hydrogen sulfide levels would increase dramatically over a few hundred years.

They can usually be found in habitats that have high levels of hydrogen sulfide.

Hydrogen sulfide is also involved in the disease process of type 1 diabetes.

Hydrogen sulfide, another highly toxic gas, may also be present.

It is used in cosmetics and testing for hydrogen sulfide.

The technology of the day did not render the hydrogen sulfide harmless.

But the amount of hydrogen sulfide must be considerable to produce this effect.

The team comes up with a diagnosis of hydrogen sulfide gas exposure.

It only corrodes when there is hydrogen sulfide in the air.

The film of silver is due to its high sensitivity to hydrogen sulfide.

The environment is rich in hydrogen sulfide, metals and minerals.

Hydrogen sulfide can be present naturally in well water.

Of course, there are species that can metabolize hydrogen sulfide.

They say the gas, hydrogen sulfide, is not dangerous in the amounts being generated.

Small amounts of hydrogen sulfide can be found in crude petroleum.

It can also be made by reacting hydrogen sulfide with iodine.

It is prepared by treatment of formaldehyde with hydrogen sulfide.

It may also consist of hydrogen sulfide and other impurities.

Hydrogen sulfide was always in the air in small concentrations.

I am not a medical doctor or a health adviser but the problem of hydrogen sulfide in sewage is a well known one.

This could mean that there are higher levels of hydrogen sulfide in the intestine.