The representative of the Directorate of Measures and Precious Metals Mrs. Dr Jelena Bebić, Head of Group for Metrology in Chemistry participated in the work of the BIPM virtual workshop on Accurate Monitoring of Surface Ozone. The workshop attended 72 participants from different countries from the world.
The reference method for ground-level ozone measurements is based on UV photometry, with replicates of the NIST Standard Reference Photometer (SRP) acting as primary standards for numerous national and international ozone-monitoring networks. Therefore, measurements of ozone amount fractions in ambient air are ultimately anchored to the value of the ozone absorption cross-section at the wavelength of 253.65 nm. A consensus value with the smallest uncertainty ever achieved was published in 2019. Global coordination is now required to implement the 2019 value, which will increase the measured atmospheric ozone concentrations.
The workshop aims to gather representatives of reference laboratories, monitoring networks, legislators, and ozone analyser manufacturers to develop a plan and timetable for the adoption of the 2019 value.
Directorate of Measures and Precious Metals has Reference Photometer for Ozone Assay - NIST SRP 54 (Standard Reference Photometer), which is the national standard of the Republic of Serbia in the field of measurement of ambient ozone concentration as well as internationally recognized calibration and measurement capabilities in this field published in BIPM CMC database
More on: https://www.bipm.org/en/conference-centre/bipm-workshops/surface-ozone/