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Case studies--arsenic.

C H Selene J Chou1, Christopher T De Rosa

  • 1Agency for Toxic Substances and Disease Registry, Division of Toxicology, 1600 Clifton Road, NE, Atlanta, Georgia 30333, USA. cjc3@cdc.gov

International Journal of Hygiene and Environmental Health
|September 16, 2003
PubMed
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Arsenic exposure occurs through diet, water, and air. High levels can be found in certain environments and occupations, with diet being the main source for the general U.S. population.

Area of Science:

  • Environmental Science
  • Toxicology
  • Public Health

Background:

  • Arsenic is a naturally occurring element present in the environment.
  • Human exposure pathways include ingestion of food and water, inhalation of air, and dermal contact with soil or water.
  • Diet is the primary source of arsenic exposure for the general population in the U.S., with drinking water and air contributing smaller amounts.

Purpose of the Study:

  • To summarize the environmental presence and exposure routes of arsenic.
  • To identify populations and circumstances associated with elevated arsenic exposure.
  • To highlight the significance of arsenic as a hazardous substance.

Main Methods:

  • Review of environmental arsenic occurrence and exposure pathways.

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  • Identification of occupational and environmental factors leading to increased exposure.
  • Reference to the Agency for Toxic Substances and Disease Registry (ATSDR)/Environmental Protection Agency (EPA) hazardous substance priority list.

    • Main Results:

    • Diet is the predominant source of arsenic exposure for the general U.S. population.
    • Elevated arsenic levels can be found in areas with high natural arsenic concentrations in rocks, affecting soil and water.
    • Occupational exposures occur in industries like smelting, wood treatment, and pesticide application, with potential for inhalation or ingestion of arsenic-containing dust or smoke.

    Conclusions:

    • Arsenic exposure is widespread, with diet being a major contributor.
    • Specific environmental and occupational settings pose risks for higher arsenic intake.
    • Arsenic is recognized as a significant hazardous substance requiring attention in public health and environmental research.