title: [Comparing three methods of estimating concentration of worksite benzene.].
abstract: OBJECTIVE
  benzene; Air pollution; Risk assessment in the air of workshop and validate the methods.
  
  
  METHODS
  Expert-reference, BAYES statistics and expert-measurement were separately used to estimate benzene concentration in a slurry-applying workshop and modeling workshop of a rubber factory. The estimations were compared with current newly monitored data.
  
  
  RESULTS
  The estimated averages of expert-reference, BAYES statistics and expert-measurement were 100.0, 16.9, 33.2 mg/m3 respectively for the slurry-applying workshop and 100, 156, 115 mg/m3 for the modeling workshop. No significant difference was observed between the estimations and validating sample except to that of the expert-reference for the former.
  
  
  CONCLUSIONS
  BAYES statistics and expert-measurement were precise and expert-reference was candidate if no measurements in spite of its subjectivity.
authors.affiliation: Preventive Medical Section, Public Health Department, Fudan University, Shanghai 200032, China.
authors.forename: Yong-hua
authors.initials: YH
authors.lastname: He
authors.forename: Li-zhuang
authors.initials: LZ
authors.lastname: Miao
authors.forename: Hua
authors.initials: H
authors.lastname: Fu
mesh_terms: D016902:Air Pollution, Indoor / Q000032:analysis*; D001554:Benzene / Q000032:analysis*; D018570:Risk Assessment; D017132:Workplace
chemical_list: D001554:Benzene