ASTM F2980-13由美国材料与试验协会 US-ASTM 发布于 2013。
。
* 在 ASTM F2980-13 发布之后有更新,请注意新发布标准的变化。
5.1 Waste glass is currently recycled into various consumer products. This test method has been developed as a tool for evaluation of heavy metals in glass to satisfy reporting requirements for maximum allowable content for some applications.
5.2 The ranges within which this test method is quantitative are given in Table 1.
5.3 For amounts of the analyte elements outside the ranges in Table 1, this test method provides screening results. That is, it provides an unambiguous indication that each element can be described as present in an amount greater than the scope upper limit or that the amount of the element can be described as less than the scope lower limit with a high degree of confidence.
Note 2—In general, when a quantitative result is obtained, the analyst can make a clear decision as to whether a material is suitable for the intended purpose. When the contents of elements of interest are outside the quantitative range, the analyst can still make a decision whether the amount is too high or whether additional analyses are required.5.4 These methods can be applied to glass beads, plate glass, float glass, fiber glass, or ground glass. This test method has been validated for the ranges of matrix compositions that are summarized in Table 2.
TABLE 2 Matrix Components and RangesOxide
Scope Lower Limit, %
Scope Upper Limit, %
SiO2
58
80
Al2O3
1
10
Na2O
3
1 便携式X射线元素分析仪原理及方法 便携式X射线分析仪是一种能量色散型分析仪,是通过X射线管产生连续X射线,激发出被测物质的次级特征X射线(即X射线荧光),利用探测器探测到的X射线荧光来得到被测物质的元素种类和其含量(图2)。 本次实验便携式X射线元素分析仪采用的是基本参数法。这是基于XRF的基本原理进行定量计算的方法,依据严格的理论计算对基体吸收增强效应进行准确的校正。...
原理及方法 便携式X射线分析仪是一种能量色散型分析仪,是通过X射线管产生连续X射线,激发出被测物质的次级特征X射线(即X射线荧光),利用探测器探测到的X射线荧光来得到被测物质的元素种类和其含量。 本实验便携式X射线元素分析仪采用的是基本参数法。这是基于XRF的基本原理进行定量计算的方法,依据严格的理论计算对基体吸收增强效应进行准确的校正。...
目前分析重金属污染水体通常是在实验室内使用传统的测试技术。研发高效低耗、利于推广的便携式环境水质检测技术,以减少样品采集及测试过程中的人力物力财力消耗,是当前面临的紧迫需求。便携式x射线荧光光谱仪(小型台式XRF、手持式XRF)结构紧凑、功能牢靠、环境友好,具有多元素同时分析能力,重现性好,适合野外现场使用。...
X光荧光分析又称X射线荧光分析(XRF)技术,即是利用初级x射线光子或其他微观粒子激发待测样品中的原子,使之产生荧光(次级x射线)而进行物质成分分析和化学形态研究的方法。 ...
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号