An assessment of the tumorigenic properties of a Hudson County soil sample heavily contaminated with hexavalent chromium

Archives of Environmental Health
C A SnyderS Waterman

Abstract

During much of this century, Hudson County, New Jersey, was a major center for the processing of chromium ore. Some of the residue from this processing was used in landfills and in construction materials throughout the county and, in some cases, in highly populated areas. Given that it is widely accepted that exposure to hexavalent chromium compounds poses a risk for the development of respiratory-tract cancer, concerns were raised that individuals who worked or resided in chromium-contaminated areas might be at increased risk for the development of respiratory cancer. To address these concerns, we evaluated a Hudson County soil sample-heavily contaminated with chromium ore residue (Cr(+6) concentration at 5 895 mg/kg)-with respect to its carcinogenic potential to the respiratory tract of Sprague-Dawley rats. Groups of animals were given repeated intratracheal exposures to one of four materials: (1) Hudson County chromium-contaminated soil (CCS), (2) CCS augmented with calcium chromate (CaCrO4), (3) CaCrO4 alone, or (4) control soil. Nominal total doses of Cr(+6) for each respective group were 324 microg/kg, 7,975 microg/kg, 8,700 microg/kg, and 0.02 microg/kg. Incidences of malignant tumors and nephritis were not elevated in a...Continue Reading

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Citations

May 25, 2002·Journal of Toxicology and Environmental Health. Part a·Deborah M ProctorEdward V Sargent

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