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  • Title: Solvent exposure from liquid sampling media.
    Author: Moseley CL.
    Journal: Am Ind Hyg Assoc J; 1985 Feb; 46(2):B10, B12, B14. PubMed ID: 3838411.
    Abstract:
    Use of a personal sampling method using a toluene-based solution in a midget impinger led to the suspicion that it would result in toluene exposure to the worker. Field data from three workplaces indicate that in open environments, 8-hour TWA toluene exposures range from 3.6 - 20.1 mg/m3 with a mean of 8.9 mg/m3. However, sampling in semi-confined spaces resulted in 8-hour TWA concentrations up to 189 mg/m3, or 50% of the NIOSH-recommended exposure limit (375 mg/m3). Use of this and similar wet sampling methods in confined spaces requires investigators to be aware of the degree of ventilation in the space; and suggests the need to predict potential exposures before sampling. The vapor pressure method is a rapid, safe and simple way to predict this potential exposure.
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