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Emergency and Continuous Exposure Limits for Selected Airborne Contaminants, Volume 1
COMMITTEE RECOMMENDATIONS
EXPOSURE LIMITS
Previous EEL and CEL recommendations made by the Committee (1961 and 1966) for arsine exposure are as follows:
Concentrations, ppm
Duration
1961
1966
1 h
1.0
1.0
8 h
0.05
—
24 h
0.01
0.1
90 d
—
0.01
There is little additional information available for revising the 1966 recommendations and additional animal toxicity studies are necessary for the determination of an appropriate CEL. The Committee, thus, recommends that the 1-h and 24-h EELs be 1.0 and 0.1 ppm, respectively; these concentrations agree with the estimates provided by Gates et al. (1946) and Henderson and Haggard (1943). The Committee does not recommend a 90-d CEL because data are insufficient.
