Principles and applications of energy-dispersive X-ray fluorescence analysis with polarized radiation
Principles and applications of energy-dispersive X-ray fluorescence analysis with polarized radiation
复制标题
偏振辐射能量色散X射线荧光分析的原理和应用
DOI：
10.1039/ja9920700281
复制
发表时间：
1992
影响因子：
3.4
通讯作者：
Rolf Schindler
中科院分区：
文献类型：
--
作者：
J. Heckel;M. Haschke;M. Brumme;Rolf Schindler
介绍了一种利用偏振X射线对岩石、土壤、污水污泥、灰烬等有关物质进行微量元素分析的X射线荧光(XRF)装置。在20min的测量时间内，可高精度地测定40种元素(19⩽Z⩽92)，检出限为15~0.3微克g-1。用一条观察元素的净计数与康普顿散射线或韧致辐射的计数之比进行矩阵校正。使用了86个国际参考样品，涵盖了广泛的岩石、污水污泥、飞灰和土壤成分，以建立校准。对大范围参考样品的能量色散XRF测量数据的比较表明，与认证值非常吻合。对结果的长期精密度和准确度的调查表明，用所提出的XRF技术获得的结果是高质量的。
An X-ray fluorescence (XRF) device using polarizing X-rays for trace element analysis of rocks, soils, sewage sludges, ashes and other related materials is described. During a measuring time of 20 min, 40 elements (19⩽Z⩽92) can be determined with high precision with detection limits between 15 and 0.3 µg g–1. The ratio of the net counts from a line of the observed elements to the counts of a Compton-scattered line or Bremsstrahlung is used for matrix correction. Eighty-six international reference samples encompassing a wide range of rock, sewage sludge, coal fly ash and soil compositions were used to set up calibrations. Comparison of the energy-dispersive XRF-measured data for a wide range of reference samples showed very good agreement with the certified values. Investigations of the long-term precision and accuracy of the results showed the high quality of the results obtained with the proposed XRF technique.