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Cadmium: Difference between revisions
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== Occurrences == | == Occurrences == | ||
[[File:example.jpg|thumb|150px|left|Description]] | [[File:example.jpg|thumb|150px|left|Description]] | ||
Cadmium is a fairly rare element. Its abundance in the lithosphere is approximately 0.5 parts per million in the earth's crust. No samples of cadmium have ever been found in large quantities, and there is no ore that is mined solely for recovering cadmium. Greenockite (cadmium sulfide) is the compound with the most significant traces of cadmium, and occurs chiefly as a yellow stain or coating on zinc sulfide. Nearly all major zinc deposits contain cadmium in varying amounts, with the concentrates containing a maximum of about 1%.<ref name=facts>[http://nautilus.fis.uc.pt/st2.5/scenes-e/elem/e04820.html Toxicity] Unknown author, fis.uc.pt, Accessed November 19th, 2010.</ref> | |||
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'''Uses for Cadmium'''<br /> | '''Uses for Cadmium'''<br /> | ||
Cadmium was used as a leather tanning agent and a pigment in dye until the 1990's. It is still used in rechargeable Ni-Cd batteries, solar cells, solder alloys, some paint and plastic production, engraving, cadmium vapor lamps, some parasite treatment for farm animals, old television tubes and to electroplate other metals.<ref name=toxipedia>[http://toxipedia.org/display/toxipedia/Cadmium+(Cd) Toxicity] Unknown author, Toxipedia, Accessed | Cadmium was used as a leather tanning agent and a pigment in dye until the 1990's. It is still used in rechargeable Ni-Cd batteries, solar cells, solder alloys, some paint and plastic production, engraving, cadmium vapor lamps, some parasite treatment for farm animals, old television tubes and to electroplate other metals.<ref name=toxipedia>[http://toxipedia.org/display/toxipedia/Cadmium+(Cd) Toxicity] Unknown author, Toxipedia, Accessed December 1st, 2010.</ref> | ||
By far, it is most commonly used in nickel-cadmium batteries. It is used in the form of cadmium hydroxide. The batteries themselves are commonly used in the railroad and aircraft industries for starting the vehicles, and also serve as emergency power for these. In addition, they are used in many common appliances such as cordless power tools, cell phones, camcorders, lap tops, portable household appliances and some toys. These batteries are fairly cheap and well suited for high power applications. They generally last for a long time, and when compared to other types of batteries, work very well in extreme high and low temperatures.<ref name=Cadmium>[http://www.cadmium.org/ | By far, it is most commonly used in nickel-cadmium batteries. It is used in the form of cadmium hydroxide. The batteries themselves are commonly used in the railroad and aircraft industries for starting the vehicles, and also serve as emergency power for these. In addition, they are used in many common appliances such as cordless power tools, cell phones, camcorders, lap tops, portable household appliances and some toys. These batteries are fairly cheap and well suited for high power applications. They generally last for a long time, and when compared to other types of batteries, work very well in extreme high and low temperatures.<ref name=Cadmium>[http://www.cadmium.org/ | ||
