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Foods containing vitamin B 12 include meat, shellfish, liver, fish, poultry, eggs, and dairy products. [2] Many breakfast cereals are fortified with the vitamin. [ 2 ] Supplements and medications are available to treat and prevent vitamin B 12 deficiency. [ 2 ]
Cobalt: none NE; NE: Cobalt is available for use by animals only after having been processed into complex molecules (e.g., vitamin B 12) by bacteria. Humans contain only milligrams of cobalt in these cofactors. A deficiency of cobalt leads to pernicious anemia. Animal muscle and liver are good dietary sources, also shellfish and crab meat. [35]
As foods vary by brands and stores, the figures should only be considered estimates, with more exact figures often included on product labels. For precise details about vitamins and mineral contents, the USDA source can be used. [1] To use the tables, click on "show" or "hide" at the far right for each food category.
Nickel can also be present in food and drinking water; ingestion of increased nickel is not associated with systemic allergic disease, but is associated with flare-ups of dermatitis or aggravation of vesicular hand eczema. [2] Similarly, aggravation of dermatitis has been reported in response to nickel-containing surgical implants or dental ...
Nickel remains the most common, but cobalt is the second most common allergy, and in 2020 the EU introduced a temporary generic concentration limit (GCL) of 0.1% on cobalt. Limits on nickel and cobalt in textiles (130mg/kg nickel, 110 mg/kg cobalt) and leather (70mg/kg nickel, 60 mg/kg cobalt), were proposed in 2020 by France and Sweden.
Motor vehicle emissions are a major source of airborne contaminants including arsenic, cadmium, cobalt, nickel, lead, antimony, vanadium, zinc, platinum, palladium and rhodium. [29] Water sources (groundwater, lakes, streams and rivers) can be polluted by toxic metals leaching from industrial and consumer waste; acid rain can exacerbate this ...
The US nickel coin contains 0.04 ounces (1.1 g) of nickel, which at the April 2007 price was worth 6.5 cents, along with 3.75 grams of copper worth about 3 cents, with a total metal value of more than 9 cents. Since the face value of a nickel is 5 cents, this made it an attractive target for melting by people wanting to sell the metals at a profit.
Cobalt is a chemical element; it has symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, somewhat brittle, gray metal.