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CEN/TS 16976, short for "CEN Technical Specification 16976", was initially introduced as a technical specification by CEN to provide guidance and requirements for ambient air quality monitoring in 2016. Technical specifications are documents developed to address specific measurement issues or technologies while maintaining a certain level of flexibility and adaptability. CEN/TS 16976 has been instrumental in setting the stage for consistent air quality monitoring practices for PNC across European countries.
However, as air quality concerns continued to grow and advancements in monitoring technology emerged, it became evident that a more comprehensive and structured standard was needed. This leads to the transformation of CEN/TS 16976 into EN 16976, an official European standard, to address these evolving needs. The parallel establishment of the pan-European infrastructure atmospheric network ACTRIS (Aerosol, Clouds and Trace Gases Research Infrastructure) supported the need for standardization of atmospheric particle measurements.
EN 16976, titled "Ambient air - Determination of the particle number concentration of atmospheric aerosol" is currently still published as preliminary version (prEN 16976:2024). However, it represents a significant step forward in the world of ambient air monitoring. This standard brings several key improvements:
The transformation of CEN/TS 16976 into EN 16976 has a couple of benefits for ambient air monitoring:
The transformation of CEN/TS 16976 into the final EN 16976 will mark a significant milestone in the field of ambient air monitoring. This European standard not only streamlines and enhances monitoring practices with regards to particle number concentration but also reinforces the commitment to safeguarding public health and the environment. This EN sets the stage for possible guidelines and EU directives that include obligatory monitoring of particle number concentration or even threshold values such as for PM10 and PM2.5. As air quality continues to be a global concern, EN 16976 will ensure that Europe remains at the forefront of comprehensive and reliable air quality monitoring, setting an example for the rest of the world.