Direct reduction of cadmium has not been observed, but biomethylation of cadmium by polar marine bacteria has been reported Pongratz and Heumann, Several microorganisms have been shown to precipitate soluble cadmium as insoluble sulfides Holmes et al, , phosphates Montgomery et al, , or carbonates Cunningham and Lundie, Biomass from several bacterial, fungal, and algal species has been evaluated as biosorbents for the removal of soluble cadmium from solution Volesky and Holan, For more information:.
Search Medline for cadmium metabolism AND bacteria. Cadmium-binding component in Eschericia coli during accommodation to low levels of this ion. Appl Environ Microbiol. It is similar in many respects to zinc. In the International Conference on Weights and Measures redefined the meter in terms of the wavelength of the red cadmium spectral line i.
This definition has been changed see Krypton. It is also used in many types of solder, for standard E. Cadmium compounds are used in black and white television phosphors and in blue and green phosphors for color TV tubes. It forms a number of salts, of which the sulfate is most common; the sulfide is used as a yellow pigment.
Cadmium and solutions of its compounds are toxic. Cadmium can accumulate in their bodies, especially when they eat multiple plants. Cows may have large amounts of cadmium in their kidneys due to this.
Earthworms and other essential soil organisms are extremely susceptive to cadmium poisoning. They can die at very low concentrations and this has consequences for the soil structure. When cadmium concentrations in soils are high they can influence soil processes of microrganisms and threat the whole soil ecosystem.
In aquatic ecosystems cadmium can bio accumulate in mussels, oysters, shrimps, lobsters and fish. The susceptibility to cadmium can vary greatly between aquatic organisms. Salt-water organisms are known to be more resistant to cadmium poisoning than freshwater organisms. Animals eating or drinking cadmium sometimes get high blood-pressures, liver disease and nerve or brain damage.
Back to periodic table of elements chart. More from 'Elements'. Toggle navigation. Home Periodic table Elements Cadmium. About Lenntech. General Delivery Conditions. Privacy Policy. All rights reserved. Atomic number. Cadmium Cadmium is a lustrous, silver-white, ductile, very malleable metal. Applications About three-fourths of cadmium is used in Ni-Cd batteries, most of the remaining one-fourth is used mainly for pigments, coatings and plating, and as stabilizers for plastics.
Cadmium in the environment Cadmium can mainly be found in the earth's crust.
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