| Abstract Title: | Advances for robust, unattended, cylinder-free ozone precursor monitoring |
| Presenter Name: | Dr Aaron Davies |
| Co-authors/Co-presenters: | Mrs Hannah Calder |
| Company/Organisation: | Markes International Ltd |
| Country: | United Kingdom |
Abstract Information :
There is a growing requirement within the UK & EU to monitor volatile organic compounds (VOCs) linked to the formation of ground-level ozone, one of the main constituents of urban smog. This requirement is driven by the yet-to-be-released Clean Air directive. The compounds of interest range in volatility from acetylene to trimethylbenzene and vary in their composition from non-methane hydrocarbons to oxygenates to mono-terpenes. Together they are referred to as ‘ozone precursors’ and to measure all classes a variety of different sampling and analysis techniques may be necessary – such as active and diffusive sorbent tubes, canisters and online monitoring. We are aware that monitoring ozone precursors can be challenging due to a number of factors that include: • The instruments being placed at remote, unattended sites • The inherent water contained in humid ambient air samples which can potentially impact the performance, uptime and lifetime of instruments • The flexibility required to analyse the variety of sample types: tube, canister/bag and online samples In this presentation we will discuss online ozone pre-cursor monitoring case studies, where the methodology has been made more sustainable and robust to address these challenges.
