Assertion: butadiene | /r/HasProperty | detected in emission
Facets:
value: at levels
type: TEMPORAL
Source sentences:
text: Butadiene has been detected in the emissions from heated cooking oils, including Chinese rapeseed, peanut, soybean, and canola oils, at levels ranging from 23 to 504 µg/m3 (Pellizzari et al., 1995; Shields et al., 1995).