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Kadmium (chemická značka Cd, latinsky Cadmium) je měkký, lehce tavitelný, toxický kovový prvek. Slouží jako součást různých slitin a k povrchové ochraně jiných kovů před korozí. Vzhledem k jeho toxicitě je jeho praktické využití omezováno na nejnutnější minimum.
Cadmium is a chemical element; it has symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it demonstrates oxidation state +2 in most of its compounds, and like mercury, it has a lower melting point than the transition metals in groups 3 ...
Vlastnosti; Sloučeniny; Výskyt v přírodě; Produkce a zásoby; Výroba a rafinace; Výužití; Chemické vlastnosti a reakce kadmia. Chemický prvek kadmium je bílý, lesklý, měkký a velmi tažný kov. Na vzduchu se kadmium pokrývá vrstvou oxidu, za vyšších teplot reaguje s halogeny.Zapáleno v atmosféře kyslíku shoří jasným červeným plamenem za vzniku hnědého oxidu ...
Cadmium exerts toxic effects on the kidneys as well as the skeletal and respiratory systems. It is classified as a human carcinogen. It is generally present in the environment at low levels; however, human activity has greatly increased levels in environmental media relevant to population exposure.
Cadmium is a naturally occurring toxic metal with common exposure in industrial workplaces, plant soils, and from smoking. Due to its low permissible exposure in humans, overexposure may occur even in situations where only trace quantities of cadmium are found.
Cadmium ist ein silbergraues, weiches, duktiles und sehr giftiges Metall, welches als eher selten auf der Erde gilt, besonders in reiner Form. Es kommt meistens in Mineralien vor, darunter Monteponit, Greenockit oder aber auch Cadmoselit. Cadmium wird hauptsächlich in China abgebaut. Es findet Verwendung in Lampen, Lasern, Batterien sowie als ...
16 Οκτ 2024 · Cadmium, chemical element, a metal of Group 12 of the periodic table. Most cadmium produced is electroplated onto steel, iron, copper, brass, and other alloys to protect them for corrosion. Cadmium is physically similar to zinc but is denser and softer.
7 Ιουν 2024 · Learn about cadmium, which may raise your risk of lung cancer. Cadmium is a natural element: all soils and rocks contain some cadmium. Exposure occurs mostly where cadmium products (such as batteries, pigments, metal coatings, and plastics) are made or recycled.
Cadmium is considered a class one carcinogen by the World Health Organization (WHO). The presence of cadmium in the environment, increased by activities such as years of coal and fossil-fuel usage and mining is a serious health hazard, and its monitoring is essential.
It is usually found as a mineral combined with other elements such as oxygen (cadmium oxide), chlorine (cadmium chloride), or sulfur (cadmium sulfate, cadmium sulfide). All soils and rocks, including coal and mineral fertilizers, contain some cadmium .