REVIEW PAPER
Two Faces of Chromium - Pollutant and Bioelement
A. Bielicka, I. Bojanowska*, A. Wiśniewski
 
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Department of Environmental Engineering, Faculty of Chemistry, University of Gdańsk,
18 J. Sobieskiego St., 80 - 852 Gdańsk, Poland
 
Pol. J. Environ. Stud. 2005;14(1):5–10
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ABSTRACT
Life and growth of plants and animals depends on some metals as micronutrients. However, certain forms of some metals can also be toxic, even in relatively small amounts, and therefore determine risk to the health of animals and people. Chromium is a heavy metal whose concentration in the environment is increasing. Chromium in inorganic systems occurs in several chemical forms. Only Cr(III) and Cr(VI) are significant in biological systems. Trivalent chromium is an essential nutrient component while excess chromium(VI) in biological systems has been implicated in specific forms of cancer.
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