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The Environmental Geochemistry and Bioaccessibility of Mercury in Soils and Sediments: A Review

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  • Andy Davis
  • Nicolas S. Bloom
  • Shane S. Que Hee

Abstract

There have been many studies of mercury geochemistry in the environment and its bioconcentration/bioaccumulation through the aquatic food chain. However, there is a dearth of information regarding the bioaccessibility of mercury in human receptors exposed primarily by soil ingestion. This paper reviews the current state of knowledge of mercury bioaccessibility and speciation in soils, and the utility of speciation methods to estimate mercury bioaccessibility. We conclude that additional research is necessary to determine: (1) whether analytical measurements can adequately determine the bioaccessibility of mercury in sediments and soils; (2) the accuracy of in vitro analyses in assessing mercury bioaccessibility; (3) the ability of mercury to cross tissue membranes of the mouth, esophagus, stomach, and the small and large intestines; (4) the speciation and distribution of mercury in biological fluids; and (5) mercury bioavailability using an in vivo animal model relevant to human gastrointestinal tract conditions.

Suggested Citation

  • Andy Davis & Nicolas S. Bloom & Shane S. Que Hee, 1997. "The Environmental Geochemistry and Bioaccessibility of Mercury in Soils and Sediments: A Review," Risk Analysis, John Wiley & Sons, vol. 17(5), pages 557-569, October.
    • Handle: RePEc:wly:riskan:v:17:y:1997:i:5:p:557-569
    DOI: 10.1111/j.1539-6924.1997.tb00897.x
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    1. Dennis J. Paustenbach & Gretchen M. Bruce & Paul Chrostowski, 1997. "Current Views on the Oral Bioavailability of Inorganic Mercury in Soil: Implications for Health Risk Assessments," Risk Analysis, John Wiley & Sons, vol. 17(5), pages 533-544, October.
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