News tagged with cadmium

Related topics: heavy metals

Review: Organic foods may be healthier

(HealthDay)—Organic produce and grains contain more protective antioxidants, less pesticide residue, and lower levels of the toxic metal cadmium than food raised in traditional ways, according to a new ...

Jul 16, 2014
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Elevated cadmium levels linked to disease

People with higher levels of cadmium in their urine—evidence of chronic exposure to the heavy metal found in industrial emissions and tobacco smoke—appear to be nearly 3.5 times more likely to die of liver disease than ...

May 09, 2013
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Elevated mercury, cadmium block in-vitro pregnancy

(Medical Xpress) -- A new University at Albany study finds background exposure to levels of mercury and cadmium commonly found in the environment may significantly interfere with early pregnancy through in-vitro ...

Jul 19, 2012
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Dietary cadmium may be linked with breast cancer risk

Dietary cadmium, a toxic metal widely dispersed in the environment and found in many farm fertilizers, may lead to an increased risk of breast cancer, according to a study published in Cancer Research, a journal of the Am ...

Mar 15, 2012
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Jewelers want states to replace limits on cadmium

(AP) -- The U.S jewelry industry wants states to overturn laws that limit the toxic metal cadmium in children's trinkets and adopt new voluntary guidelines it helped create, saying stricter rules in several ...

Sep 26, 2011
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Cadmium

Cadmium ( /ˈkædmiəm/ kad-mee-əm) is a chemical element with the symbol Cd and atomic number 48. This soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Similar to zinc, it prefers oxidation state +2 in most of its compounds and similar to mercury it shows a low melting point compared to transition metals. Cadmium and its congeners are not always considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. The average concentration of cadmium in the Earth's crust is between 0.1 and 0.5 parts per million (ppm). It was discovered in 1817 simultaneously by Stromeyer and Hermann, both in Germany, as an impurity in zinc carbonate.

Cadmium occurs as a minor component in most zinc ores and therefore is a byproduct of zinc production. It was used for a long time as a pigment and for corrosion resistant plating on steel while cadmium compounds were used to stabilize plastic. With the exception of its use in nickel–cadmium batteries and cadmium telluride solar panels, the use of cadmium is generally decreasing in its other applications. These declines have been due to competing technologies, cadmium’s toxicity in certain forms and concentration and resulting regulations. Although cadmium has no known biological function in higher organisms, a cadmium-dependent carbonic anhydrase has been found in marine diatoms.

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