Are there different forms of sulphur?
Not really. Sulphur is an element. Sulphur that is mined or recovered from oil and gas production is known as elemental sulphur, or brimstone. Sulphur can be combined with other elements to form various compounds. Sulphur compounds, such as sulphuric acid, also are produced as a by-product of ferrous and non-ferrous metal smelting. Other compounds, such as sulphur dioxide, may be emitted from petroleum products used in cars and coal generating electricity. Plants absorb sulphur from the soil as sulphate.