论文部分内容阅读
从澳大利亚的选矿矿物流中,就铁、铜、锌、锡和铅,大约采集了七百个供荧光分析用的样品,以它们为例,说明了固体探测器和放射性同位素X射线源的使用情况。探测极限取决于0.001～0.004％元素重量范围内计数的统计性(三倍于标准偏差)。分析精度一般在元素平均含量的2％～10％之间(均方根值),所做含量测定并与矿业公司所提供的化验结果相比。在绝大多数情况下,误差主要来自化验,而不是来自X射线荧光技术本身。本文指出了固体探测器和放射性同位素X射线源在矿业分析中可能应用的若干方面。
From Australia’s mineral processing streams, about 700 samples for fluorescence analysis were collected for iron, copper, zinc, tin and lead, using them as an example of the use of solid detectors and radioisotope X-ray sources Happening. The limit of detection depends on the statistical (three times the standard deviation) count in the range of 0.001 - 0.004% elemental weight. Analytical accuracy is typically between 2% and 10% of the average elemental content (root mean square), determined by the content and compared with the test results provided by the mining company. In the vast majority of cases, the error mainly comes from the assay, not from the X-ray fluorescence technology itself. This paper points out several aspects that solid detectors and radioactive isotope X-ray sources may have for mining analysis.