Assertion: arsine | /r/HasProperty | approximate exposure time
Facets:
Source sentences:
text: In a driver who was poisoned when unloading cylinders containing arsine (approximate exposure time about 1–2 min), the level of total arsenic in his urine amounted to 0.72 mg/litre on the day of exposure, decreasing to 0.01 mg/litre by the fourth day