Chronic Exposure 01
Chronic Exposure 01 : (a) Long_term exposure, usually lasting one year to a lifetime. [CARB, 2000: Glossary of Air Pollution Terms]; (b) Multiple exposures occurring over an extended period of time, or a significant fraction of the animal's or the individual's lifetime. [IRIS, 1999: Glossary of IRIS Terms]; (c) A longterm exposure to a chemical for a period of one year or more in animals and more than seven years in humans. [OFA, 2000: Oxyfuels Glossary]; (d) A persistent, recurring, or longterm exposure, as distinguished from acute. Chronic exposure may result in health effects (such as cancer) that are delayed in onset, occurring long after exposure has ceased. [REAP, 1995: Residential Exposure Assessment Project]; (e) Multiple exposures occurring over an extended period of time, or a significant fraction of the animal's or the individual's life_time. [USDOE, 2000: RAIS Glossary]; (f) Long_term exposure usually lasting 6 months to a lifetime. [USEPA, 1995: Benchmark Dose]; (g) Multiple exposures occurring over an extended period of time or over a significant fraction of an animal's or human's lifetime (Usually seven years to a lifetime). [USEPA, 1997a: EPA Terms of Environment]; (h) Exposure to the poison occurs over a period of weeks, months, or years; onset of signs may be sudden and dramatic, or can be insidious like a slow loss in body condition or reduced productivity. [WSU, 1999: Definitions and Abbreviations of Veterinary Terms]
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