Health Effects of Permethrin-Impregnated Army Battle-Dress Uniforms (1994) / Chapter Skim
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2 EXPOSURE ASSESSMENT
2 EXPOSURE ASSESSMENT
Pages 23-26
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From page 23... ...
MILITARY NONFIELD PERSONNEL Because of permethrin's low volatilization, the U.S. Army and the subcommittee, considered the dermal route to be the only relevant route of exposure from impregnated uniforms.
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From page 24... ...
To adjust for actual exposure conditions, the Army assumed that military personnel would wear the treated uniforms 16 hr per day for 6 years during a 75-year lifetime. Adjusting for the proportion of lifetime exposed resulted in a calculated average daily lifetime dose of 3.6 x lO-s mg/kg per day.
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From page 25... ...
GARMENT WORKERS Estimation of dermal exposure to garment workers from handling ~mpregnated fabric in the manufacture of uniforms requires that some of the factors used to convert the target impregnation concentration, 0.125 mg/cm2, to an internal dose be different from those used for military personnel. Since washing of the uniform is not a consideration, it is assumed that 100% of the permethrin is available for transfer to the skin.
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From page 26... ...
The lower bound might actually be an upper bound if other routes do not come into play. RECOMMENDATIONS The subcommittee recommends that studies should be conducted to collect data on the representative permethrin exposure factors to produce a more complete and accurate risk characterization for garment workers.
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