大気浮遊粒子状物質の蛍光Ｘ線分析法による多元素定量とその正確さの評価

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書誌事項

タイトル別名
  • Multielement determination of suspended particulate matter by an X-rayfluorescence analysis and an analytical accuracy investigation.
  • タイキ フユウ リュウシジョウ ブッシツ ノ ケイコウ Xセン ブンセキホウ

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抄録

The analytical accuracy of suspended particulate matter (SPM) on a filter was investigated by a wavelength dispersive-type X-ray fluorescence spectrometer in both an empirical correction procedure method (EC) and a fundamental parameter method (FP). SPM samples were collected on a membrane filter with a low-volume air sampler. In this work, we analyzed 15 elements of 103 samples and investigated the accuracy of these quantitative methods in comparison with the measured values by AAS and IC. In the case of EC, a very good agreement could be confirmed for 10 elements (Ca, Ti, V, Cr, Mn, Fe, Cu, Ni, Zn, Pb). The correlation coefficient was 0.89 to 1.00. Also the matrixeffect correction was made better a correlation for 4 elements (Na, Mg, Cl, K), Though Al was better without any matrix-effect correction. In case of FP, the samples were treated as thin-layer samples, they were equal to EC in analytical accuracy, judging from the repeatability. On the other hand, samples were treated as bulk samples, the accuracy concerning which was aggravated. The average of the correlation coefficient made worse by 0.17 points. In addition, the management accuracy of the equipment, a sample for standardization of the instrument was prepared with poly-vinylalcohol and active carbone as a carrier. The coefficients of the variation of the X-ray intensities of the elements were less than 7.5% for measurements under 12 different dates during 12 months. This sample could be used for the standardization of the instrument for a long time, judging from the repeatability.

収録刊行物

  • 分析化学

    分析化学 47 (1), 31-37, 1998

    公益社団法人 日本分析化学会

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