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单词 cadmium
释义

Definition of cadmium in English:

cadmium

noun ˈkadmɪəmˈkædmiəm
mass noun
  • The chemical element of atomic number 48, a silvery-white metal.

    Cadmium occurs naturally in zinc ores and is obtained as a by-product of zinc smelting. It is used as a component in alloys with a low melting point and as a corrosion-resistant coating on other metals

    Example sentencesExamples
    • Similarly, small amounts of the toxic trace metal cadmium can promote plant growth
    • In addition to mercury and lead, the other heavy metals commonly used by auto makers are cadmium and hexavalent chromium.
    • Finally, vitamin C can help rid the body of heavy metal toxins, including mercury, lead, cadmium and nickel.
    • Unknown quantities of mercury, lead, chromium and cadmium are also on board.
    • The principal pollutants are lead, cadmium, zinc, iron and manganese.
    • High levels of zinc, cadmium, and barium have also been consistently found in residential soils close by the plant.
    • And with toxic metals like cadmium, mercury and lead, it's the same story.
    • For example, many metals, like cadmium, lead, and mercury are toxic to humans and are mutagenic and carcinogenic.
    • Crabs, for example, when examined, show up to 20 times the normal levels of carcinogenic metals such as cadmium and cobalt.
    • But motor oil wears out and gets dirty, soaking up toxic heavy metals like lead and cadmium, and so it must be changed.
    • Other heavy metals, such as cadmium, were not recognized as poisonous until the early nineteenth century.
    • The use of chlorophyll fluorescence to study effects of cadmium, copper, and mercury on photosynthesis has been recently reviewed.
    • These elements include mercury, bromine, cadmium, indium, thallium, lead, and bismuth.
    • A final stress condition that was characterized was exposure to the heavy metal cadmium.
    • New processing methods are outlined from which potassium, sodium, barium, strontium and cadmium were discovered.
    • Computers contain chemicals such as brominated flame retardants and heavy metals like lead and cadmium.
    • Exposure to toxic metals such as cadmium or lead can result in an alteration in peripheral metabolism of thyroid hormones.
    • Selenium appears to antagonize cadmium, especially in acute exposures.
    • The thermal and electrical conductivity of copper are relatively unaffected by small amounts of either silver or cadmium.
    • When waste oils are burned in incinerators, toxic metals such as nickel, vanadium and cadmium get ensnared in the particles given off into the atmosphere.

Origin

Early 19th century: from Latin cadmia 'calamine', so named because it is found with calamine in zinc ore. Compare with calamine.

 
 

Definition of cadmium in US English:

cadmium

nounˈkædmiəmˈkadmēəm
  • The chemical element of atomic number 48, a silvery-white metal.

    Example sentencesExamples
    • Finally, vitamin C can help rid the body of heavy metal toxins, including mercury, lead, cadmium and nickel.
    • Crabs, for example, when examined, show up to 20 times the normal levels of carcinogenic metals such as cadmium and cobalt.
    • A final stress condition that was characterized was exposure to the heavy metal cadmium.
    • High levels of zinc, cadmium, and barium have also been consistently found in residential soils close by the plant.
    • These elements include mercury, bromine, cadmium, indium, thallium, lead, and bismuth.
    • The thermal and electrical conductivity of copper are relatively unaffected by small amounts of either silver or cadmium.
    • In addition to mercury and lead, the other heavy metals commonly used by auto makers are cadmium and hexavalent chromium.
    • Other heavy metals, such as cadmium, were not recognized as poisonous until the early nineteenth century.
    • When waste oils are burned in incinerators, toxic metals such as nickel, vanadium and cadmium get ensnared in the particles given off into the atmosphere.
    • Exposure to toxic metals such as cadmium or lead can result in an alteration in peripheral metabolism of thyroid hormones.
    • But motor oil wears out and gets dirty, soaking up toxic heavy metals like lead and cadmium, and so it must be changed.
    • The principal pollutants are lead, cadmium, zinc, iron and manganese.
    • Similarly, small amounts of the toxic trace metal cadmium can promote plant growth
    • And with toxic metals like cadmium, mercury and lead, it's the same story.
    • Unknown quantities of mercury, lead, chromium and cadmium are also on board.
    • Selenium appears to antagonize cadmium, especially in acute exposures.
    • New processing methods are outlined from which potassium, sodium, barium, strontium and cadmium were discovered.
    • Computers contain chemicals such as brominated flame retardants and heavy metals like lead and cadmium.
    • The use of chlorophyll fluorescence to study effects of cadmium, copper, and mercury on photosynthesis has been recently reviewed.
    • For example, many metals, like cadmium, lead, and mercury are toxic to humans and are mutagenic and carcinogenic.

Origin

Early 19th century: from Latin cadmia ‘calamine’, so named because it is found with calamine in zinc ore. Compare with calamine.

 
 
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更新时间:2025/1/28 9:56:23