High levels of the carcinogenic chemical cadmium can still be found in everyday household products like second-hand plastic toys, drinking glasses, alcoholic beverage bottles, ceramics and artists' paints, according to new ...
Environment
Dec 19, 2018
2
543
The Polish Olkusz region, which is home to one of the largest lead-zinc ore deposits in the world and a correspondingly large number of mines, holds a sad record: it is home to some of the most contaminated soils in Europe. ...
Environment
Dec 13, 2018
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5
Jewelry with the toxic metal cadmium is showing up on the shelves of national retailers including Ross, Nordstrom Rack and Papaya, according to newly released test results.
Environment
Oct 11, 2018
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32
A bacterium named Moorella thermoacetica won't work for free. But UC Berkeley researchers have figured out it has an appetite for gold. And in exchange for this special treat, the bacterium has revealed a more efficient path ...
Nanophysics
Oct 09, 2018
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256
Physicists at the TU Darmstadt and their collaboration partners have performed laser spectroscopy on cadmium isotopes to confirm an improved model of the atomic nucleus. It has been developed to describe the exceptional behaviour ...
General Physics
Sep 06, 2018
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298
Nanoparticles are becoming increasingly widespread in the environment. Thousands of products contain nanoparticles, which have unique properties.
Bio & Medicine
Aug 21, 2018
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43
Scientists at Tsinghua University and Institute of Physics, Chinese Academy of Sciences in Beijing, have demonstrated the ability to control the states of matter, thus controlling internal resistance, within multilayered, ...
Quantum Physics
Aug 14, 2018
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107
Volkswagen on Tuesday said it may be forced to recall 124,000 electric and hybrid cars due to the presence of cadmium, a carcinogenic metal, in the vehicles.
Business
Jul 31, 2018
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71
Even though it was closed decades ago, the Giant Mine on the outskirts of Yellowknife has left a long environmental legacy.
Environment
Jun 14, 2018
0
15
A team from Siberian Federal University and Kirensky Institute of Physics (Siberian Department of the Russian Academy of Sciences) has developed a new method to study nanoparticles made of cadmium telluride (CdTe). The compound's ...
Nanophysics
May 16, 2018
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7
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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