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.
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.
Oxide | Scope Lower Limit, % | Scope Upper Limit, % |
SiO2 | 58 | 80 |
Al2O3 | 1 | 10 |
Na2O | 3 | 胶囊中的铬的快速筛查
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。... 无损快速检测胶囊中的铬原理及方法 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。... 水体样品化学富集薄试样-X射线荧光光谱现场分析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。... xrf国家标准有哪些?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。 ... ASTM F2980-13 中可能用到的仪器设备
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