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Many metals, particularly heavy metals are toxic, but some are essential, and some, such as bismuth, have a low toxicity. Metals in an oxidation state abnormal to the body may also become toxic: chromium(III) is an essential trace element, but chromium(VI) is a carcinogen. Only soluble metal-containing compounds are toxic.
The toxic effects of arsenic, mercury and lead were known to the ancients but methodical studies of the overall toxicity of heavy metals appear to date from only 1868. In that year, Wanklyn and Chapman speculated on the adverse effects of the heavy metals "arsenic, lead, copper, zinc, iron and manganese " in drinking water .
Cadmium is also found in some industrial paints and may represent a hazard when sprayed. Operations involving removal of cadmium paints by scraping or blasting may pose a significant hazard. The primary use of cadmium is in the manufacturing of NiCd rechargeable batteries. The primary source for cadmium is as a byproduct of refining zinc metal. [1]
Exposure to heavy metals may increase risk of calcium buildup in the walls of coronary arteries, which can lead to chronically narrowed arteries, a new study found. Heavy metal exposure could ...
The EPA commonly uses the formula, called the hazard quotient, to determine a substance’s toxicity. Still, he recommended consuming no more than an ounce of dark chocolate per day and limiting ...
Lead poisoning, also known as plumbism and saturnism, is a type of metal poisoning caused by lead in the body. [2] Symptoms may include abdominal pain, constipation , headaches, irritability, memory problems, infertility , and tingling in the hands and feet. [ 1 ]
The discovery of high levels of heavy metals in a popular fire retardant has added to long-running concerns from environmentalists. Wildfire retardant is laden with toxic metals, USC study finds ...
Deaths by heavy metal poisoning (1 C, 3 P) L. Lead poisoning (2 C, 18 P) M. Mercury poisoning (1 C, 17 P) T. Thallium poisoning (8 P) Pages in category "Toxic effects ...