表面化学分析 颗粒物滤膜的X射线荧光分析

[中文适用范围]： 本文件提供了在不同几何配置下，使用能量色散X射线荧光（EDXRF）对过滤膜（PM过滤器）上收集的颗粒物进行样品制备、元素定性和定量测定的指南。本文件不适用于PM过滤器采样。本文件仅适用于使用X射线束作为激发源探测过滤器产生的X射线发射的分析。电子显微镜产生的X射线发射被排除在外。本文件适用于一系列背景，包括但不限于引言中强调的那些。所述方法通常适用于原子序数大于11（Na）且在过滤器上沉积质量大于10 ng的元素的测定。可识别的元素和检出限取决于所采用的具体仪器配置。可以使用各种类型的过滤膜（过滤器）材料，例如玻璃纤维、石英纤维、纤维素、尼龙、聚碳酸酯（PC）和聚四氟乙烯（PTFE）。整个过滤器或其不同尺寸的部分都可以提交分析。注：基于基本参数的无标样分析被排除在外，因为PM过滤器样品的性质意味着参数定义不够充分。 [外文原描述]： This document gives guidance on sample preparation, and on qualitative and quantitative determination of elements in particulate matter collected on filtering membranes (PM filter) by energy dispersive X-ray Fluorescence (EDXRF) in different geometrical configurations. This document does not apply to PM filter sampling. This document only applies to the analysis of X-ray emission from filters that are probed using an X-ray beam as the exciting source. X-ray emissions generated by electron microscope are excluded [ 1 ] . This document is applicable under a range of contexts including, but not limited to, those highlighted in the introduction. The described method is generally applicable for the determination of elements with atomic number higher than 11 (Na) and having a deposited mass on the filter greater than 10 ng. The elements that can be identified and the detection limits depend on the specific instrumental configuration employed. Various types of filtering membranes (filter) materials can be used, such as glass fibre, quartz fibre, cellulose, nylon, polycarbonate (PC) and polytetrafluoroethylene (PTFE). The entire filter, or portions of various sizes thereof, can be submitted for analysis. NOTE Reference free analysis, based on fundamental parameters is excluded, as the nature of the PM filter samples means that the parameters are not sufficiently well defined.