SULPHUR DIOXIDE (S02)?
Sulphur dioxide (SO2) is the pollutant primarily associated with acid rain. Gaseous at normal temperature and pressure it dissolves in water and readily oxidises to sulphuric acid. Levels of SO2 have reduced over recent years with a move away from widespread burning of coal in homes and factories. It is one of the main pollutants that led to the introduction of legislation governing atmospheric pollution such as the 1956 Clean Air Act.

Sources of SULPHUR DIOXIDE (S02)
The principal source of SO2 is from the combustion of fossil fuels in domestic premises and, more importantly, non-nuclear power stations. Fossil fuel burning power stations account for around two thirds of total SO2 emissions in the UK. Other industrial processes contribute a further 20%, with vehicles, primarily diesel, accounting for a mere 2%.

Where are the levels of SULPHUR DIOXIDE (S02) measured ?
Basildon Council has a roadside monitoring station based at Gloucester Park. It is sited on Uppermayne - one of the busiest roadways in the district.

How often are the levels of SULPHUR DIOXIDE (S02) recorded?
The monitoring station records the levels of SULPHUR DIOXIDE (S02) at 15 minute intervals, 24 hours a day, 365 days a year. The air quality chart is updated every hour.

What are the effects of SULPHUR DIOXIDE (S02) ?
SO2 is an irritant when it is inhaled and at high concentrations (over 1000ppb) may cause severe problems in asthmatics such as narrowing of the airways, known as bronchoconstriction. Asthmatics are considerably more sensitive to the effects of SO2 than other individuals and an effect on lung function may be experienced at levels as low as 200ppb.

Todays Measurements of SULPHUR DIOXIDE (S02)