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Unit 2
Analytical Chemistry and Test（9）
X-ray Fluorescence (XRF) Spectrometry is an instrumental analytical technique for the elemental analysis of solids and liquids with minimal treatment. The sample is irradiated with X-rays. The atoms in the sample are excited and will emit characteristic X-rays which is different for each element, this forms the basis for qualitative analysis. The number of characteristic X-rays of a certain element is proportional to its concentration, providing the basis for quantitative analysis. In principle all elements from boron to uranium can be determined, and trace element analysis (ppm range) and the determination of minor and major element concentrations (% range) can be performed on the same sample. To-day, XRF is widely used in laboratories dealing with multielement analysis. It is used for quality control(metallurgy, cement, glass, and ceramic industry) and in such diverse areas as mining, materials research, and environmental analysis.
第2单元
分析化学与测试（9）
X-射线荧光光谱法是一种用于固体和液体具有最小样品处理的元素分析的仪器分析技术。样品被X-射线辐射，样品中的原子被激发，每个元素发射不同的特征X-射线，这是定性分析的基础。每个元素特征的X射线的数量正比于它的浓度，为定量分析提供了基础。从原理上来说，可以测定从镀到铀的所有元素，在同一样品中可以同时进行痕量元素分析(ppm范围)和次成分和主成分元素浓度的测定(%范围)。如今，XRF广泛应用于实验室处理多元素分析。它被用于质量控制(冶金、水泥、玻璃和陶瓷工业）以及各种不同的领域，如采矿、材料研究和环境分析等。
| 来源：摘自《质检专业英语（检验检疫部分）》