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potassium    音标拼音: [pət'æsiəm]
n. 钾[金属元素]

钾[金属元素]

potassium
n 1: a light soft silver-white metallic element of the alkali
metal group; oxidizes rapidly in air and reacts violently
with water; is abundant in nature in combined forms
occurring in sea water and in carnallite and kainite and
sylvite [synonym: {potassium}, {K}, {atomic number 19}]

Potassium \Po*tas"si*um\, n. [NL. See {Potassa}, {Potash}.]
(Chem.)
An Alkali element, occurring abundantly but always combined,
as in the chloride, sulphate, carbonate, or silicate, in the
minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic
weight 39.0. Symbol K (Kalium).
[1913 Webster]

Note: It is reduced from the carbonate as a soft white metal,
lighter than water, which oxidizes with the greatest
readiness, and, to be preserved, must be kept under
liquid hydrocarbons, as naphtha or kerosene. Its
compounds are very important, being used in glass
making, soap making, in fertilizers, and in many drugs
and chemicals.
[1913 Webster]

{Potassium permanganate}, the salt {KMnO4}, crystallizing in
dark red prisms having a greenish surface color, and
dissolving in water with a beautiful purple red color; --
used as an oxidizer and disinfectant. The name {chameleon
mineral} is applied to this salt and also to potassium
manganate.

{Potassium bitartrate}. See {Cream of tartar}, under {Cream}.
[1913 Webster]


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  • Potassium: Sources, Deficiencies, Overdose, Treatment More
    Too little potassium can lead to serious health consequences, but too much can also cause temporary or long-term health problems Learn how potassium affects your health
  • Potassium: Benefits Side Effects
    Potassium is an essential mineral that acts as an electrolyte It helps your muscles contract, balances fluid in your body and helps offset sodium
  • Potassium - Wikipedia
    In the periodic table, potassium is one of the alkali metals, all of which have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge (which combines with anions to form salts) In nature, potassium occurs only in ionic salts
  • What is potassium and why do I need it? - BBC Food
    What is potassium? Potassium is an essential mineral that helps us maintain healthy blood pressure One of the ways it does this is by helping your kidneys remove excess sodium
  • Potassium - Health Professional Fact Sheet - Office of Dietary Supplements
    The total amount of potassium in the adult body is about 45 millimole (mmol) kg body weight (about 140 g for a 175 pound adult; 1 mmol = 1 milliequivalent [mEq] or 39 1 mg potassium) [3] Most potassium resides intracellularly, and a small amount is in extracellular fluid [2-4]





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