New indoor air quality standards; ISO16000-34: Strategies for the measurement of airborne particles and ISO16000-37: Measurement of PM2,5 mass concentration

摘要

Particulate matter air quality is estimated to be one of the most significant sources of adverse health effects and even very significant direct cause of death. The Global Burden of Disease (GBD) study estimated that 2.9 million deaths in 2015 were associated with household air pollution, whereas WHO estimated 4.3 million related deaths in 2012 (Lancet Commission of Pollution and Health). Indoor air particle concentrations are a major factor for determining particle exposure and possible health risks. The concentration, composition, and size distribution of airborne particulate matter in indoor environments can be challenging to measure reliably. Measurement strongly depend on parameters such as the room size, relative humidity, air exchange rate, air flow conditions, and sink effects on different surfaces (e.g., walls, ceilings, floor coverings, furnishings). Depending on conditions this can result in highly variable levels of indoor PM pollution that are not easily determined or measured in terms of their impact on health. Increased need for reliable and comparable measurements has brought up a requirement for the standardisation of measurement of fine and ultrafine (PMIO, PM2.5 and UFP) particles and their real-time behaviour in indoor air. This work has been carried in ISO Technical Committee ISO/TC 146, Air quality, Subcommittee SC 6, Indoor air. The newly published ISO 16000-34 and 37 standards include for the first time a comprehensive guidance on indoor air quality airborne particle measurement instrumentation and methods. ISO16000-37 presents a EN12341 based method for measuring indoor PM 2.5 together with supplementary realtime measurement. This presentation will review the new ISO 16000-34 and 37 standards, evaluate their meaning for the indoor air exposure studies and give insights and instrument solutions providing both PM2.5 and real-time data.