ISO 4443:2022 主要用于铝生产的冰晶石 元素的测定 使用压片的波长色散X射线荧光光谱测定法
标准编号：ISO 4443:2022
中文名称：主要用于铝生产的冰晶石 元素的测定 使用压片的波长色散X射线荧光光谱测定法
英文名称：Cryolite primarily used for the production of aluminium — Determination of elements — Wavelength-dispersive X-ray fluorescence spectrometric method using pressed powder tablets
发布日期：2022-01
标准范围
本文件规定了一种波长色散X射线荧光光谱法（XRF）测定冰晶石（Na3AlF6）从氟含量到微量元素含量的方法。本方法未规定校准标准物质。该方法适用于主要用于生产铝的冰晶石。附件？A提供了将元素转化为化合物的转化因子。对于超出这些范围的浓度，检测结果的有效性和精密度尚未确定。氟（以F表示）的浓度范围是从510？克/公斤到560？克/千克。铝（以Al表示）的浓度范围为120？克/公斤到150？克/千克。钠（以Na表示）的浓度范围为270？克/公斤到330？克/千克。硅（以SiO2给出）的浓度范围为最低检测限（LLD）至4.0？克/千克。铁（以Fe2O3给出）的浓度范围为LLD至0.37？克/千克。硫（以SO4表示）的浓度范围为LLD至5.0？克/千克。磷（以P2O5给出）的浓度范围为LLD至0,40？克/千克。钙（以CaO表示）的浓度范围为LLD至0,80？克/千克。
This document specifies a wavelength-dispersive X-ray fluorescence spectrometric (XRF) method for the determination of cryolite (Na3AlF6) from the content of fluorine to the content of trace elements. The calibration reference materials are not specified in this method.The method is applicable to cryolite, which is primarily used for the production of aluminium. Annex A provides conversion factors for converting elements to compounds. The validity and precision of test results for concentrations outside these ranges has not been determined.The concentration range of fluorine (given as F) is from 510 g/kg to 560 g/kg. The concentration range of aluminium (given as Al) is from 120 g/kg to 150 g/kg. The concentration range of sodium (given as Na) is from 270 g/kg to 330 g/kg. The concentration range of silicon (given as SiO2) is from the lowest limit of detection (LLD) to 4,0 g/kg. The concentration range of iron (given as Fe2O3) is from LLD to 0,37 g/kg. The concentration range of sulfur (given as SO4) is from LLD to 5,0 g/kg. The concentration range of phosphorus (given as P2O5) is from LLD to 0,40 g/kg. The concentration range of calcium (given as CaO) is from LLD to 0,80 g/kg.
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