1.1x00a0;These test methods cover the determination of ten major elements (SiO2, Al2O3, Fe2O3, MgO, CaO, Na2O, K2O, TiO2, P2O5, MnO, and LOI in ceramic whitewares clays and minerals using wavelength dispersive X-ray fluorescence spectrometry (WDXRF). The sample is first ignited, then fused with lithium tetraborate and the resultant glass disc is introduced into a wavelength dispersive X-ray spectrometer. The disc is irradiated with X-rays from an X-ray tube. X-ray photons emitted by the elements in the samples are counted and concentrations determined using previously prepared calibration standards. (1)2 In addition to 10 major elements, the method provides a gravimetric loss-on-ignition.
Note 1:x00a0;Much of the text of this test method is derived directly from Major element analysis by wavelength dispersive X-ray fluorescence spectrometry , included in Ref (1).
1.2x00a0;Interferences, with analysis by WDXRF, may result from mineralogical or other structural effects, line overlaps, and matrix effects. The structure of the sample, mineralogical or otherwise, is eliminated through fusion with a suitable flux. Fusion of the sample diminishes matrix effects and produces a stable, flat, homogeneous sample for presentation to the spectrometer. Selecting certain types of crystal monochromators eliminates many of the line overlaps and multiorder line interferences. A mathematical correction procedure (2) is used to correct for the absorption and enhancement matrix effects.
1.3x00a0;Concentrations of the elements in clays and minerals are determined independent of the oxidation state and are reported in the oxidation state in which they most commonly occur in the earthx2019;s crust.
1.4x00a0;Concentration ranges:
Element
Concentration range (percent)
ASTM C1605-2004(2014)由美国材料与试验协会 US-ASTM 发布于 2004。
ASTM C1605-2004(2014)在国际标准分类中归属于: 71.040.50 物理化学分析方法。
非常抱歉,我们暂时无法提供预览,您可以试试: 免费下载 ASTM C1605-2004(2014) 前三页,或者稍后再访问。
点击下载后,生成下载文件时间比较长,请耐心等待......
1.1x00a0;These test methods cover the determination of ten major elements (SiO2, Al2O3, Fe2O3, MgO, CaO, Na2O, K2O, TiO2, P2O5, MnO, and LOI in ceramic whitewares clays and minerals using wavelength dispersive X-ray fluorescence spectrometry (WDXRF). The sample is first ignited, then fused with lithium tetraborate and the resultant glass disc is introduced into a wavelength dispersive X-ray spectrometer. The disc is irradiated with X-rays from an X-ray tube. X-ray photons emitted by the elements in the samples are counted and concentrations determined using previously prepared calibration standards. (1)2 In addition to 10 major elements, the method provides a gravimetric loss-on-ignition.
Note 1:x00a0;Much of the text of this test method is derived directly from Major element analysis by wavelength dispersive X-ray fluorescence spectrometry , included in Ref (1).
1.2x00a0;Interferences, with analysis by WDXRF, may result from mineralogical or other structural effects, line overlaps, and matrix effects. The structure of the sample, mineralogical or otherwise, is eliminated through fusion with a suitable flux. Fusion of the sample diminishes matrix effects and produces a stable, flat, homogeneous sample for presentation to the spectrometer. Selecting certain types of crystal monochromators eliminates many of the line overlaps and multiorder line interferences. A mathematical correction procedure (2) is used to correct for the absorption and enhancement matrix effects.
1.3x00a0;Concentrations of the elements in clays and minerals are determined independent of the oxidation state and are reported in the oxidation state in which they most commonly occur in the earthx2019;s crust.
1.4x00a0;Concentration ranges:
Element | Concentration range | |||
ASTM C1605-2004(2014) 中可能用到的仪器设备
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved |