Personal profile: Stuart Upton - Senior Consultant, Air Pollution, BREOver 40 years of experience of the air quality business, main area of specialisms: air quality measurement, ingress of air pollutants into buildings, ventilation, aerosol science. Work historyBRE (22 years to present).Work areas and experience includes:• Measurement of the ingress of different types of air pollutants into buildings.• Testing filtration, air purification equipment and air quality sensor performance in controlled chambers.• Monitoring air quality in a variety of environments (including: homes; offices; schools; hospitals and other workplaces).• Measurement of air quality (including bleed-air contaminants) and comfort parameters in aircraft cabins and on Flight Decks.• Measurement of building ventilation rates and the development of new, more environmentally friendly ventilation tracers.• Physical modelling in a wind tunnel of the dispersion of pollutants in urban areas.• Investigating and providing guidance on controlling particle emissions from construction sites. • Testing the performance of domestic gas flues and the monitoring pollutant emissions from different types of gas burning appliance. AEA Technology, Harwell (2 years). Wind tunnel testing of the performance of personal samplers for occupational monitoring, biological aerosol samplers and aerosol concentrators.Warren Spring Laboratory (16 years). Design and testing of aerosol samplers (ambient and occupational), dust gauges and rain and snow gauges in wind tunnels. Also, gas dispersion modelling and wind erosion investigations.