Strontium nitrate phosphors

Strontium nitrate, for preparation of strontium sulfate or strontium selenite, 3 17 Strontium selenide, 3 20 phosphors, 3 11, 22 Strontium selenite, for preparation of strontium selenide, 3 20 Strontium sulfate, for preparation of strontium sulfide, 3 19 Strontium sulfide, 3 20 phosphors, 3 11, 21, 23 Structure, of 1,3-diketones, 2 10 electronic, of rare earth elements, 2 30... 

Some of the procedures outlined below have been described previously. " They are designed for the preparation of phosphors that are to be used for quantitative studies of luminescence. Details are presented for the preparation of strontium nitrate, strontium chloride, strontium sulfate, and strontium selenite in a state of high purity for the reduction of the sulfate to the sulfide and the selenite to the selenide and for the conversion of the sulfide and the selenide into typical infrared-sensitive phosphors. 

Cement, laboratory, 1 189 Cerite, extraction of, 2 44 Cerium, phosphor containing strontium sulfide and, 3 23 separation of, from rare earth mixtures, 2 43, 47, 48 test for, 2 50 Cerium amalgam, 1 15 Cerium-group earths, separation of, from yttrium earths by doublesulfate method, 2 44, 46 Cerium (III) magnesium nitrate, 2Ce(N03)s-3Mg(N03)2-24H,0, separation of praseodymium from lanthanum by, 2 57 Cerium(III) nitrate, 2 51 Cerium (IV) nitrate, basic, 2 49 Cesium, cesium azide for preparation of, 1 79... 

Bertrand Pelletier (Bayonne, 30 July 1761-Paris, 21 July 1797 (after inhaling chlorine)) was first an assistant to D Arcet, then an apothecary, finally from 1795 professor in the ficole Polytechnique, and a member of government commissions. He worked on arsenic acid, which he obtained by heating arsenious oxide with ammonium nitrate, the crystallisation of deliquescent salts, chlorine, discovering chlorine hydrate independently of Berthollet (see p. 504), ethers, plumbago and molybdenite, and the preparation of phosphorus and its compounds, including phosphorous acid, phosphoric acid, and hydrogen phosphide (discovered by Gei embre) he was severely burned by an accident with phosphorus, which he showed would bum in air under water. He also published on strontium compounds, the analyses of... 

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