一种改进的x射线粉末衍射分析PM10滤光片的方法

Atmospheric Environment. Part A. General Topics Pub Date : 1993-10-01 DOI:10.1016/0960-1686(93)90412-R

Briant L. Davis, Hong Chen

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引用次数: 2

摘要

通过XRD对TSP，二分法和PM10过滤器的化合物进行定量分析的早期方法的物种形成结果通常是边缘或不可接受的，因为在超声波提取和浓缩的情况下，负载非常轻，并且衬底纤维的干扰作用。开发了一种分析极轻负载PM10滤波器的方法，该方法使用超声波颗粒剥离、无负载空白滤波器的x射线透射、衬底衍射x射线分析和质量吸收平衡，以及通常的x射线衍射扫描。对一组样品负载小于105 μg cm−2的过滤器进行了分析，以说明改进的程序。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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An improved procedure for analysis of PM10 filters by X-ray powder diffraction

Speciation results from earlier methods of quantitative analysis of TSP, dichotomous, and PM₁₀ filters for compounds by XRD were often marginal to unacceptable because of very light loadings and the interfering effects of substrate fibres in cases of ultrasonic extraction and concentration. A method for analysis of very lightly loaded PM₁₀ filters has been developed, using ultrasonic particle stripping, X-ray transmission of unloaded blank filters, substrate diffraction X-ray analysis, and mass absorption balance, along with the usual X-ray diffraction scanning. Analysis of a set of filters having less than 105 μg m cm⁻² sample load is used to illustrate the improved procedure.

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