Though we have not measured particulates these are of great concern in traffic congestion problems such as we are seeing in Northwood and the increasing problem(s) we could face due to increased vehicles on the road from more building development in the centre of Northwood and its environs. We draw your attention to the following.
PM2.5 and PM 10.0 are often referred to in studies and are shown in the European Air Quality Standards.
Atmospheric particulate matter – also known as particulate matter (PM) or particulates – is microscopic solid or liquid matter suspended in the Earth’s atmosphere. Sources of particulate matter can be man-made or natural. They have impacts on climate and precipitation that adversely affect human health. Subtypes of atmospheric particle matter include suspended particulate matter (SPM), respirable suspended particle (RSP; particles with diameter of 10 micrometres or less), fine particles (diameter of 2.5 micrometres or less), ultrafine particles, and soot.
The IARC and WHO designate airborne particulates a Group 1 carcinogen. Particulates are the deadliest form of air pollution due to their ability to penetrate deep into the lungs and blood streams unfiltered, causing permanent DNA mutations, heart attacks, and premature death. In 2013, a study involving 312,944 people in nine European countries revealed that there was no safe level of particulates and that for every increase of 10 μg/m3 in PM10, the lung cancer rate rose 22%. The smaller PM2.5 were particularly deadly, with a 36% increase in lung cancer per 10 μg/m3 as it can penetrate deeper into the lungs.
European Commission Air Quality Standards- http://ec.europa.eu/environment/air/quality/standards.htm