Benzene exposure is often measured using air sampling methods in occupational settings. Personal air monitors can be worn by workers to assess their exposure levels. Biological monitoring can also be used, which involves measuring benzene or its metabolites in blood or urine samples. Regulatory agencies have set occupational exposure limits to ensure worker safety, such as the Occupational Safety and Health Administration (OSHA) permissible exposure limit (PEL) and the National Institute for Occupational Safety and Health (NIOSH) recommended exposure limit (REL).
