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Gb T 14635 2008 Translated English Of Chinese Standard Gbt 14635 2008 Gb T14635 2008 Gbt14635 2008
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Book Synopsis GB/T 14635-2008 Translated English of Chinese Standard. (GBT 14635-2008, GB/T14635-2008, GBT14635-2008) by : https://www.chinesestandard.net
Download or read book GB/T 14635-2008 Translated English of Chinese Standard. (GBT 14635-2008, GB/T14635-2008, GBT14635-2008) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2018-10-26 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Method specifies the determination method for total rare earth contents in rare earth metals and their compounds. This Method is applicable to the determination of total rare earth contents in individual and mixed rare earth metals and their compounds. See Table 1 for the range of determination. This Method is not applicable to the determination of total rare earth contents in individual and mixed rare earth metals and their compounds of which holmium, erbium, thulium, ytterbium, lutecium compose the main body or the thorium content, the lead content (mass fraction) is greater than 0.1%, respectively.
Book Synopsis GB/T 14635-2020 Translated English of Chinese Standard. (GBT 14635-2020, GB/T14635-2020, GBT14635-2020) by : https://www.chinesestandard.net
Download or read book GB/T 14635-2020 Translated English of Chinese Standard. (GBT 14635-2020, GB/T14635-2020, GBT14635-2020) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2021-02-08 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the determination method of total rare earth content in the rare earth metals and their compounds. This Standard is applicable to the determination of the total rare earth content in rare earth metals and their compounds. This Standard contains two methods: Method-1 is oxalate gravimetric method, and Method-2 is EDTA titration method. Method-1 is applicable to the determination of the total rare earth content in single and mixed rare earth metals and their compounds; the determination range is shown in Table 1; it is not applicable to the determination of the total rare earth content in single and mixed rare earth metals and their compounds mainly based on erbium, thulium, ytterbium, and lutetium or the individual content of thorium and lead is greater than 0.1%. Method-2 is applicable to the determination of the total rare earth content in the single rare earth metals and mixed rare earth metals and their compounds mainly based on heavy rare earth holmium, erbium, thulium, ytterbium, and lutetium; the determination range is shown in Table 2; it is not applicable to the determination of the total rare earth content in the single rare earth with relative purity less than 99.5%, as well as in a single rare earth metal and its compounds with other impurity elements greater than 0.5%; it is also not applicable to the determination of the total rare earth content in materials with individual content of thorium, scandium, and zinc greater than 0.1%.
