Particulate Air Pollution (PM)
Particle contamination is an increasing problem in major cities, where the particles in the air (PM10) are above EU threshold values.
According to EU’s Thematic Strategy on Air Pollution more than 300,000 EU citizens die every year due to particle pollution. The EU has estimated that the health related economic cost in a “business as usual” scenario can be as high as 609 billion EUR annually in 2020, equalling to 1,350 EUR per EU-citizen.
The Mayor of London’s Air Quality Strategy includes a series of measures to reduce PM10 emissions across London in addition to local measures to tackle PM10 concentrations in priority locations. The application of dust suppressants to road surfaces in priority areas is one of the local measures.
CMA was selected as the suppressant by TfL on the basis of experience from the European Union (EU) Life funded project – CMA+.
CMA was applied along Victoria Embankment between Waterloo Bridge and Byward Street. An overall reduction in 24-hour PM10 curbside concentrations was identified. The level of improvement during this period has been calculated to be approximately 14%.
Stockholm, Sweden is also struggling with particle contamination. In 2003 and 2004 the Swedish Road Administration in Stockholm, conducted tests with ICE & DUST-AWAY in the city centre and on the highway between Stockholm and Arlanda. During the tests, the particle concentration was measured after conducting three different treatments of the road: No treatment; Spraying with water and treatment with ICE & DUST-AWAY from Nordisk Aluminat.
The effects of spraying with water were limited, but when the road was treated with ICE & DUST-AWAY, the PM10 contents dropped by an average 35 per cent. The explanation is that CMA binds dust and particles, thus preventing them from being whirled into the air. Stockholm City is also using ICE & DUST-AWAY during winter time on major roads leading into the city and in parts of the city.
Studies in Gothenburg, Sweden, and in Klagenfurt, Austria, have showed the same positive effect on the particle contamination in major cities.
measures to reduce road dust emission in Stockholm” on www.simair.smhi.se