EDXRF-FP 法によるPM2.5 の非破壊多元素同時分析とその疫学研究への応用
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概要
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A non-destructive simultaneous analytical method for multi-elements in aerosols using the latest type of energy dispersive X-ray fluorescence spectrometry (EDXRF) has been developed recently. In this paper, a couple of previous studies regarding aerosol analysis achieved using the latest EDXRF are reviewed. Generally, EDXRF with a fundamental parameter (FP) quantification technique gave results similar to those obtained by acid digestion/ICP-MS analysis. Moreover, the EDXRF-FP quantification was found to be independent of its collection site, particle size, and filter type. This paper also reports the preliminary results of the indoor/outdoor ratios for the concentrations of aerosols and their chemical composition as obtained by EDXRF. No significant differences between indoor and outdoor PM2.5concentrations were observed. It was also found that the I/O ratio for each element was often different from that for aerosol concentration. EDXRF would be suitable for application to epidemiological studies since it could analyze enormous number of samples to obtain chemical compositions of aerosols.
- 日本エアロゾル学会の論文
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