sulpher in concrete floor

[perx]

just had a servey done and they have found sulpher in the concrete floor what does this mean, and is it dangerous

[buildersmate]

The specific answer to your question is to ask the surveyor who reported on this - that's what you paid him for.
There are degrees of contamination and I can't guess the extent to which your floors are contaminated.
This issue is generally linked to the use of power plant ash to make up the concrete in the floor. It is sometimes known as 'redash' and is a particular problem in the Stoke area in the Midlands, mainly in the 1980s I believe. The sulphur in the ash reacts with the lime in the cement and it expands, creating a dome in the floor. It is not a health hazard, but it results in thew fllor having to be stripped off and relaid.