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¿Þ1¡¡ Principle of the standard-free method for a serum sample. The yield of continuous X-rays corresponding the shadowed portion in the spectrum is used after subtracting X-ray peaks in the region. Potassium was designated as the index element.(¸¶ÏÀʸ£±»²¾È)

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¿Þ2¡¡ Comparison of calcium concentrations in 24 human serum samples of less than 1 ¦Ìl obtained by the standard-free method and the internal-standard method.(¸¶ÏÀʸ£²»²¾È)

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¿Þ3¡¡ Concentration of 26 elements in hair samples taken from 250 Japanese persons obtained by the present method.(¸¶ÏÀʸ£³»²¾È)

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¸¶ÏÀʸ£± Data source 1¡§
Standard-free Method of Quantitative Analysis for Bio-samples.
K. Sera, S. Futatsugawa*, K. Matsuda** and Y. Miura***
Cyclotron Research Center, Iwate Medical University
*Takizawa Laboratory, Japan Radioisotope Association
** Department of Hygiene and Public Health, School of Medicine, Iwate Medical University
*** Department of Clinical Pathology, School of Medicine, Iwate Medical University
Int'l Journal of PIXE, 6, 467-481 (1996)

¸¶ÏÀʸ£² Data source 2¡§
Quantitative Analysis of Bio-medical Samples of Very Small Quantities by the Standard-free Method.
K. Sera, S. Futatsugawa*, S. Hatakeyama*, Y. Saitoh* and K. Matsuda**
Cyclotron Research Center, Iwate Medical University
*Takizawa Laboratory, Japan Radioisotope Association
** Department of Hygiene and Public Health, School of Medicine, Iwate Medical University
Int'l Journal of PIXE, 7, 157-169 (1997)

¸¶ÏÀʸ£³ Data source 3¡§
Quantitative Analysis of Untreated Bio-samples.
K. Sera, S. Futatsugawa* and K. Matsuda**
Cyclotron Research Center, Iwate Medical University
*Takizawa Laboratory, Japan Radioisotope Association
** Department of Hygiene and Public Health, School of Medicine, Iwate Medical University
Nuclear Instruments and Methods in Physics Research B 150, 226-233 (1999)

¸¶ÏÀʸ£´ Data source 4¡§
Quantitative Analysis of Untreated Human Nails for Monitoring Human Exposure to Heavy Metals.
K. Sera, S. Futatsugawa*, Y. Miura**, S. Murao*** and E. Clemente****
Cyclotron research center, Iwate medical university
*Takizawa Laboratory, Japan Radioisotope Association
** Department of Clinical Pathology, School of Medicine, Iwate Medical University
*** Institute for Geo-Resource and Environment, AIST
**** Department of Mining, Metallurgical and Materials Engineering, University of the Philippines
Int'l Journal of PIXE, 12, 125-136 (2002)

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PIXE analysis, quantitative analysis, standard-free, small quantity, untreated, clinical samples, toxic elements, human exposure
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