Abstract
Abstract Passive sampling is an established technique in the monitoring and characterisation of Volatile Organic Compounds (VOCs). Employed across various fields such as personal exposure monitoring, large-scale environmental studies and indoor air monitoring. Passive sampling provides a cheap, convenient and reliable method of characterising a range of VOCs across several samples in large-scale air monitoring programmes. Passive sampling possesses several favourable qualities to alternative methods, such as no pump requirements and a non-invasive design. Further to this, early sorbent-based passive samplers were required to undergo solvent extraction as a preparation step before analysis. The solvent extraction limited air-speed effects at the surface of the badge, preventing the stable conditions required for passive sampling. Recent developments allow analytes to desorb from the sampler via thermal desorption (TD), improving sensitivity and accuracy that were unachievable through earlier sorbent-based sampling devices. Within this presentation I will detail the latest TD-compatible passive samplers, exploring axial and radial sampling technologies and how these technologies are advancing environmental monitoring.
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