title: Verification of the effect on risk due to reduction of benzene discharge.
abstract: The time course of ambient benzene level and benzene discharge was investigated. Data obtained by continuous monitoring and monthly monitoring showed a decreasing trend of ambient benzene level. The rate of decrease was around 22-25% per two years from FY 1997 to FY 1999. The discharge data of benzene reported by several organizations were collected and re-arranged to estimate the total discharge in Japan. The total amount of benzene discharged decreased by 25% from 1997 to 1999. Risk reduction due to the regulation of benzene content in gasoline as predicted in our previous report was verified by the obtained data.
authors.affiliation: Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Niigata City 950-2181, Japan. kajihara@gs.niigata-u.ac.jp
authors.forename: Hideo
authors.initials: H
authors.lastname: Kajihara
authors.forename: Akihiro
authors.initials: A
authors.lastname: Fushimi
authors.forename: Junko
authors.initials: J
authors.lastname: Nakanishi
mesh_terms: D001554:Benzene / Q000506:poisoning*; D004777:Environment; D004787:Environmental Pollution / Q000517:prevention & control*; D005742:Gasoline; D006801:Humans; D007564:Japan; D011634:Public Health; D018570:Risk Assessment; D001335:Vehicle Emissions
chemical_list: D005742:Gasoline; D001335:Vehicle Emissions; D001554:Benzene