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Hexavalent chromium (chromium(VI), Cr(VI), chromium 6) is any chemical compound that contains the element chromium in the +6 oxidation state (thus hexavalent). [1] It has been identified as carcinogenic, which is of concern since approximately 136,000 tonnes (150,000 tons) of hexavalent chromium were produced in 1985. [ 2 ]
Hexavalent chromium is a toxic metal, known to cause several health problems and is a carcinogen. Exposure to hexavalent chromium can cause irritation and problems in the respiratory tract, stomach, and small intestine. It is linked to several cancers, such as lung cancer, oral cancer, and intestinal cancer. [11]
PG&E used chromium 6, or hexavalent chromium (a cheap and efficient rust suppressor), in its compressor station for natural-gas transmission pipelines. [1] [3] Hexavalent-chromium compounds are genotoxic carcinogens. In 1993, legal clerk Erin Brockovich began an investigation into the health impacts of the contamination. A class-action lawsuit ...
Soluble hexavalent chromium is the most common type of chromium in oceans, where over 70% of dissolved chromium in the ocean is found in oxyanions such as chromate (CrO 2− 4). Soluble trivalent chromium is also found in the oceans where complexation with organic ligands occurs. Chromium is estimated to have a residence time of
The FDA’s analysis found chromium levels of 0.590 parts per million in one sample and 0.566 ppm in another. Dr. Laura Breeher, ...
Significant amounts" of hexavalent chromium were found in the water of more than 40 homes in the area, some of which have now been fitted with state-monitored filters on their water supply. [26] Brockovich said: "The only difference between here and Hinkley is that I saw higher levels here than I saw in Hinkley." [26]
Chromium compounds are compounds containing the element chromium (Cr). Chromium is a member of group 6 of the transition metals. The +3 and +6 states occur most commonly within chromium compounds, followed by +2; charges of +1, +4 and +5 for chromium are rare, but do nevertheless occasionally exist. [3] [4]
Chromium is found in foods like broccoli, brown rice, fish, eggs, green beans, and potatoes, though small amounts of the mineral are naturally found in the body, says Dr. Alatassi.