X線マイクロアナライザーによる高分子材料中の数種の元素の定量

概要

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Various kinds of elements are generally contained more or less in plastics as catalysts, additives or fillers. We tried to determine several elements in polyethylene sheets using an electron probe microanalyzer (EPMA). Polyethylene sheets containing given amounts of fine powder of inorganic compounds were prepared by hot press at 180℃. Sheet surface was coated with gold in order to make it electro-conductive. It was confirmed that iron and calcium could be determined in the range from 0.1 to 30wt% with a fairly good accuracy by the use of calibration curves of relative intensity vs. content. Possibility of quantitative determination was examined for 26 elements by classifying into four groups according to the type of analyzing crystals. All the elements studied gave linear calibration curves. Especially the elements measured with LiF as the analyzing crystal had large possibility for determination, because the calibration curves could be actually expressed by a line for all the elements examined here.
社団法人日本分析化学会の論文
1987-06-05