ろ紙法けい光X線分析による浮遊粉じんの分析

概要

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Fluorescent X-ray spectrometry with filter paper technique is applied to the determination of metals in airborn dust, which is collected on the filter paper (Toyo filter paper No. 2) using a high volume air sampler (Staplex). The intensity of the characteristic K<SUB>α</SUB> radiation of each heavy metal in dust against the surrounding background is counted by fixed time method. The metal acetylacetonates are used as the metal standards. Regression analysis is applied to derive the calibration line between the ratio (counts for standard sample/counts for sampling filter paper) and the metal content.<BR>The contents of metals on the filter paper are calculated from the calibration lines and are converted into values per unit volume of air. Metals in dust determined are titanium, iron, zinc and manganese. Values obtained by the X-ray method agree well with those by colorimetric methods.
社団法人日本分析化学会の論文