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blood lead level
Blood lead level (BLL), is a measure of lead in the blood. It is measured in micrograms of lead per deciliter of blood (μg/dL); 10 µg/dL is equivalent to 0.48 micromoles per liter (µmol/L).〔http://www.health.nsw.gov.au/publichealth/chorep/env/env_pbhem.asp Government of New South Wales, Australia: Blood lead levels in Broken Hill children〕
==Sources==
Exposure to lead occurs through ingestion, inhalation, and dermal contact. When exposed to lead, lead enters one’s bloodstream and elevates their blood lead level that results to lead poisoning or an elevated blood lead level.〔Stellman, Jeanne Mager (1998). Encyclopaedia of Occupational Health and Safety. International Labour Organization. pp. 81.2–81.4.〕 A major source of exposure to lead comes from inhalation. Factories and industries, vehicles exhausts, and even dust in the air that people breathe all have the potential of containing lead. Other major sources of lead exposure also include ingestion and contact with products such as paint and soil that may contain lead as well. Many older claw foot bathtubs have also been found to leach lead, especially when filled with warm bath water.
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