[Comparing three methods of estimating concentration of worksite benzene.].
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.
He
Yong-hua
YH
Preventive Medical Section, Public Health Department, Fudan University, Shanghai 200032, China.
Miao
Li-zhuang
LZ
Fu
Hua
H
D016902:Air Pollution, Indoor / Q000032:analysis*; D001554:Benzene / Q000032:analysis*; D018570:Risk Assessment; D017132:Workplace
D001554:Benzene