Assertion: butadiene | /r/HasProperty | detected
Facets:
Source sentences:
text: Butadiene was detected (detection limit 0.05 µg/m3) in 7314 (or 80%) of 9168 24-h samples collected between 1989 and 1996 from 47 sites across Canada.
text: Butadiene was detected but not quantified in a groundwater plume near a waste site in Quebec where refinery oil residues and a variety of organic chemicals had been dumped (Pakdel et al., 1992).