STANDARDS FOR QUANTITATIVE X-RAY MICROANALYSIS OF BIOLOGICAL SPECIMENS
نویسندگان
چکیده
منابع مشابه
Ideal standards for quantitative x-ray microanalysis of biological specimens.
The use of ion exchange beads is proposed as standards for the estimation of various elements in biological tissues. Elements to be detected or quantitated in biological tissues occur in three forms: as free ions or salts, in a crystalline phase, and bound to a matrix. For the latter category a standard system using ChelexlOO -jon exchange beads is proposed. Cations can be attached in a control...
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In a thin specimen X-ray absorption and fluorescence can, to a first approximation, be ignored and the observed X-ray intensity ratios, Ia/Ie, can be converted into weight fraction ratios, CA/CB, by multiplying by a constant kaB; CA/C B = kAB I A/IB. kAB values can be calculated or determined experimentally. The major correction which may have to be made to the calculated weight fraction ratio ...
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ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1984
ISSN: 0449-1947
DOI: 10.1051/jphyscol:19842107