strontiumn.

Brit.

/ˈstrɒntɪəm/,

/ˈstrɒnʃ(ɪ)əm/, U.S.

/ˈstrɑn(t)ʃiəm/,

/ˈstrɑntiəm/

Etymology: < strontia n.: see -ium suffix.

Chemistry.

The metallic base of strontia; a dark-yellow metal, fusible at red heat. Symbol Sr.The salts of strontium are chiefly used for imparting a deep-red colour to flame.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > strontium > [noun]

strontium1808

1808 H. Davy in Philos. Trans. (Royal Soc.) 98 346 I shall venture to denominate the metals from the alkaline earths barium, strontium, calcium, and magnium.

1866 H. E. Roscoe Lessons Elem. Chem. xvii. 148 Copper is the only red-coloured metal known, whilst gold, strontium, and calcium are yellow.

1916 Med. Press & Circular 10 May 419/2 Lactate of strontium 2 grammes a day, to control the albuminuria.

Compounds

C1. attributive and in other combinations, as strontium chloride, etc.

ΚΠ

1892 Photogr. Ann. II. 447 [Price list enumerates:] Strontium acetate, bromide, carbonate, chloride, iodide, nitrate (pure, recrystallised), nitrate (commercial).

C2.

strontium 90 n. a radioactive isotope of strontium which is one of the chief products of the fission of uranium 235, can pass from fall-out into plants and animals and hence into human tissue (where it is concentrated in bones and teeth), and has been used in radiotherapy.

ΘΚΠ

the world > matter > physics > atomic nucleus > radioactive isotope > specific isotopes > [noun] > strontium

strontium 901955

the world > matter > chemistry > elements and compounds > metals > specific elements > strontium > [noun] > radioactive isotope of

strontium 901955

1955 Sci. News Let. 28 May 345/1 Strontium 90 is of particular interest because, being chemically similar to calcium, it may be deposited in human bone.

1961 Lancet 12 Aug. 366/1 Measurements of strontium 90 in human bone in the United Kingdom.

1978 Jrnl. Royal Soc. Arts 126 257/1 Two fission products, Strontium 90 and Caesium 137 have particularly awkward half-lives of about 30 years.

This entry has not yet been fully updated (first published 1919; most recently modified version published online March 2022).

单词	strontium
释义	strontiumn. Brit. /ˈstrɒntɪəm/, /ˈstrɒnʃ(ɪ)əm/, U.S. /ˈstrɑn(t)ʃiəm/, /ˈstrɑntiəm/ Etymology: < strontia n.: see -ium suffix. Chemistry. The metallic base of strontia; a dark-yellow metal, fusible at red heat. Symbol Sr.The salts of strontium are chiefly used for imparting a deep-red colour to flame. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > strontium > [noun] strontium1808 1808 H. Davy in Philos. Trans. (Royal Soc.) 98 346 I shall venture to denominate the metals from the alkaline earths barium, strontium, calcium, and magnium. 1866 H. E. Roscoe Lessons Elem. Chem. xvii. 148 Copper is the only red-coloured metal known, whilst gold, strontium, and calcium are yellow. 1916 Med. Press & Circular 10 May 419/2 Lactate of strontium 2 grammes a day, to control the albuminuria. Compounds C1. attributive and in other combinations, as strontium chloride, etc. ΚΠ 1892 Photogr. Ann. II. 447 [Price list enumerates:] Strontium acetate, bromide, carbonate, chloride, iodide, nitrate (pure, recrystallised), nitrate (commercial). C2. strontium 90 n. a radioactive isotope of strontium which is one of the chief products of the fission of uranium 235, can pass from fall-out into plants and animals and hence into human tissue (where it is concentrated in bones and teeth), and has been used in radiotherapy. ΘΚΠ the world > matter > physics > atomic nucleus > radioactive isotope > specific isotopes > [noun] > strontium strontium 901955 the world > matter > chemistry > elements and compounds > metals > specific elements > strontium > [noun] > radioactive isotope of strontium 901955 1955 Sci. News Let. 28 May 345/1 Strontium 90 is of particular interest because, being chemically similar to calcium, it may be deposited in human bone. 1961 Lancet 12 Aug. 366/1 Measurements of strontium 90 in human bone in the United Kingdom. 1978 Jrnl. Royal Soc. Arts 126 257/1 Two fission products, Strontium 90 and Caesium 137 have particularly awkward half-lives of about 30 years. This entry has not yet been fully updated (first published 1919; most recently modified version published online March 2022). < n.1808
随便看	micro-investigation micro-metallographer micro-metallography micro-mini micro-miniskirt micro-opaque micro-operation micro-operative micro-order micro-organic micro-oven micro-ovening micro-panorama micro-petrologist micro-petrology micro-reproduction micro-scale micro-sensor micro-shift micro-skirt micro-skirted micro-social micro-sociology micro-spectrophotometric micro-thin