Sorbent consisting of spherical, micron-sized, agglomerated particles bound together in a rigid and highly porous structure used for the extraction of semi-volatile organic compounds from air in high-volume samplers.
Notes: - Their main attribute is their favourable aerodynamic properties, which permit sampling at high flow rates.
- Foamed polyurethane sorbents have a minor use for extracting compounds from water.
Source:
PAC, 2016, 88, 517. 'Glossary of terms used in extraction (IUPAC Recommendations 2016)' on page 541 (https://doi.org/10.1515/pac-2015-0903)