Upper Bound
Upper Bound : General. An plausible upper limit to the true value of a quantity. This is usually not a true statistical confidence limit. [IRIS, 1999: Glossary of IRIS Terms] Uptake: The process by which a substance crosses an absorption barrier and is absorbed into the body. [USEPA, 1992: GL for Exposure Assessment] [USEPA, 1992a: Dermal Exposure Assessment] [USEPA, 1997b: Exposure Factors Handbook]
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