Particulate monitoring technology has been added to the AQMesh air quality monitoring pods. “This is a major development,” says Stephen Hoskin from the Tewkesbury based company Air Monitors. “AQMesh already monitors the most important gases, but fine particulates are one of the pollutants of greatest concern - government figures suggest 29,000 people die prematurely in the UK every year from particle pollution.”
The human nose is particularly sensitive to Hydrogen Sulphide (H2S); a highly offensive odorous gas, reminiscent of rotten eggs. With an odour threshold between 0.005 ppm and 1.5ppm, relatively low levels of Hydrogen Sulphide can result in complaints if industrial plants generate exposure at these levels. A chemical waste treatment plant in the UK has therefore installed a monitoring and alarm system to generate alerts when H2S concentrations reach levels that might cause concern with staff and the Public.