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- Cobalt blue pigment in porcelain, glass, pottery, ceramics and enamels.
- Cobalt blue in blue and green watercolour paints and crayons.
- Metal-plated objects. Buckles. Buttons. Zippers. Snaps. Costume jewellery. Utensils. Tools.
Democratic Republic of Congo
Cobalt is used in both glazes and the manufacture of pottery, ceramics, and even the tiles on your roof. Your body actually needs cobalt to survive. It is one of many trace elements needed in your diet. Cobalt is also used to manufacture vitamin B12.
It is an important source of gamma-rays. It is widely used in cancer treatment, as a tracer and for radiotherapy. Cobalt is found in the minerals cobaltite, skutterudite and erythrite.
The Democratic Republic of the Congo has the largest cobalt reserves in the world, at some 3.6 million metric tons as of 2019. As the total global cobalt reserves amount to seven million metric tons, this means that the DR Congo's cobalt reserves account for nearly half of the world's reserves of the metal.
Cobalt is a hard, brittle metal that occurs naturally in the environment and is a common by-product of nickel and copper mining activities. Cobalt can enter the environment from burning coal or oil, processing of cobalt-containing ores, and the production and use of cobalt- containing chemicals.
Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. The compounds cobalt silicate and cobalt(II) aluminate (CoAl2O4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes.
One method of treating ASR Hip Replacement patients with high levels of chromium and cobalt in their blood is chelation therapy. The process involves the administration of chelating agents—the most common of which is ethylenediaminetetraacetic acid (EDTA)—to remove the poisonous metals from the body.
If you have a cobalt deficiency, this also means you have a vitamin B-12 deficiency. Anemia is a main cause of a cobalt deficiency. This is the case with pernicious anemia. Symptoms can include numbness, fatigue and tingling in your hand and feet.
Chocolate contains the highest level of Co, with offal, butter and ice cream also containing high levels in comparison to other foods (ANSES, 2011).
Cobalt is also an essential trace element for humans, and is found at the centre of vitamin B12 and a range of other co-enzymes called cobalamins. Even though the body contains only 2–5 mg of vitamin B12, its involvement in the production of red blood cells means it is vital to life.
Nickel is also present in a surprisingly large number of foods and food products, including:
- black tea.
- nuts and seeds.
- soy milk and chocolate milk.
- chocolate and cocoa powders.
- certain canned and processed foods, including meat and fish (check labels)
- certain grains, including: oats. buckwheat. whole wheat. wheat germ.
Sometimes, metal particles (cobalt) are released as the metal ball grinds against the metal cup when you walk. These metal particles (ions) can get released into the hip socket and sometimes the bloodstream, causing cobalt toxicity.
Although it is rare for the general population to be allergic to cobalt, it is seen in some referred patients with dermatitis.
Cobalt has only recently been recognized as a potentially essential nutrient for plants. Cobalt is necessary for nitrogen (N) fixation occurring within the nodules of legume plants. Cobalt is a metallic element located in the same row of the chemical periodic table as many other micronutrients.
People who get sick from being exposed to large amounts of cobalt on one single occasion usually recover and have no long-term complications. The symptoms and problems associated with long-term cobalt poisoning are rarely reversible.
Cobalt poisoning from hip prosthesis is rare but debilitating. It's caused when the metal wears and introduces cobalt into the bloodstream. This is a known risk with metal-on-metal implants, but newer data are showing that it is also a risk with metal-on-polyethylene implants. According to Dr.
It is a very small part of our environment. Cobalt is a component of vitamin B12, which supports the production of red blood cells. Very small amounts are needed for animals and humans to stay healthy. Cobalt poisoning can occur when you are exposed to large amounts of it.
The diagnosis of cobalt toxicity is based on the combination of clinical history and laboratory confirmation. The preferred method of testing is inductively coupled mass spectrometry for metal ion value determination, and the typical patient specimens tested include serum, whole blood, or urine.
The average Cr concentration ranged between 0.5 and 2.5 μg/L in blood and between 0.8 and 5.1 μg/L in serum. For Co, the range was 0.7–3.4 μg/L in blood and 0.3–7.5 μg/L in serum.
Local symptoms of metallosis include hip or groin pain, numbness, swelling, weakness and a change in the ability to walk, according to the U.S. Food and Drug Administration. You may notice problems with your skin, heart, kidneys, nervous system or thyroid before you experience local symptoms.
As hip replacements fail and metal flakes enter the body, patients can suffer from cobalt toxicity (elevated cobalt levels). Besides the symptoms associated with other forms of metallosis, cobalt toxicity can cause patients to suffer from fever, inflammation, and low thyroid levels.
Chromium and cobalt toxicity may have caused permanent but unchanging brain damage in the patients, which in turn may have caused the cognitive problems. Alternatively, metal poisoning may have triggered early onset dementia in these patients.
