sulfur dioxide
sulphur dioxide

The process uses a natural gas flame to break down the effluent into sulphur dioxide.

Also, there was a good trace of sulphur dioxide in its atmosphere.

Experts have described the coal as similar to natural gas in terms of its sulphur dioxide content.

They also give off sulphur dioxide, one of the major causes of acid rain.

The Finnish oil industry has reduced emissions of sulphur dioxide by 80 per cent in the past 12 years.

On the other hand, there is not expected to be any difference in emissions of sulphur dioxide and other particles.

The second major issue was the maximum level of sulphur dioxide and sulphites permitted in food.

Where we have greater problems are, firstly, on sulphur dioxide.

Measures have been taken in Europe to control sulphur dioxide and nitrogen oxide emissions since the 1970s, with some success.

This is well known for metabisulphites and sulphur dioxide (see p 291).