| 单词 | osmium tetroxide |
| 释义 | > as lemmasosmium tetroxide osmium tetroxide n. a poisonous, pale yellow solid, OsO4, that has a distinctively pungent, harmful vapour and is used in solution as a biological stain, esp. for lipids, and as a fixative; also called osmic acid. ΘΚΠ the world > life > biology > laboratory analysis > material > [noun] > staining material osmium tetroxide1869 picrocarmine1872 rose bengal1878 stain1880 erythrosin1884 Gram stain1884 vesuvin1885 Nile blue1888 pyronin1895 Janus green1898 counterstain1899 Nissl stain1899 Leishman stain1904 trypan blue1911 quinacrine mustard1957 the world > matter > chemistry > chemical tests > indicators > [noun] > other indicators or biological stains osmium tetroxide1869 thionine1886 neutral violet1890 carbol-fuchsin1891 triacid1896 1869 R. Bridges Fownes's Man. Elem. Chem. (ed. 10) 279 Osmium tetroxide, and the trioxides of arsenic and antimony, are readily volatile. 1893 Amer. Naturalist 27 175 The osmic acid so valuable to the histologist as a fixing reagent, is known to the chemist as osmium tetroxide, OsO4, and is one of the series of osmium compounds with oxygen. 1974 Nature 18 Jan. 145/1 White Leghorn chicken embryos..were fixed in glutaraldehyde and osmium tetroxide. < as lemmas |
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