| 摘要 |
FIELD: analytical chemistry. ^ SUBSTANCE: method includes preparing synthetic mixture of substances with calculation of containment of poi component I in one unit of mass of created standard sample, while for each j of n samples of standard aerosol samples, produced from methyl-cellulose films of similar chemical composition, mass mj and intensiveness Iji of lines of x-ray spectrum of fluorescence of i component are measured, linear dependence is produced between Iji and mj, checked value muji for each sample of standard sample is determined from mathematical formula muji=p0imj and its error from formula where DeltaMi - error, connected with determining of concentration of component i in source materials of mixture, used for preparing mixture; Sr0i - remaining relative standard deviation, characterizing dispersion of experimental points around a line; t(alpha, f) - Student criterion for value level alpha=0,05 and number of freedom degrees f=n-2; n - number of standard sample items. ^ EFFECT: possible increase of precision of detection of checked containment level mui for each j of n samples of standard samples of composition of aerosols, loaded on a filter. ^ 3 ex, 2 dwg |
