Chemical effect on K shell X-ray fluorescence parameters for some Mn and Ni compounds

Optimization of the energy dispersive x‐ray fluorescence spectrometer for determination of elemental composition of air particulate matter samples

“…The technique is based on the photoelectric absorption phenomena followed by deexcitation of atoms with emission of characteristic photons. The energy of the emitted x‐ray radiation is characteristics for the emitting element, its intensity is related to the concentration of the element in the irradiated sample 2,3 …”

“…A secondary target system also permits for selecting an optimal set of secondary targets, in the case of this work Ni and Mo, to achieve efficient excitation of elements of interest. Both effects (reduction of background radiation and selection of appropriate set of secondary targets) combined with optimized x‐ray source‐secondary target‐sample‐detector pathlength resulted in a simple but effective measurement system suitable for determination of element concentrations in air particulate matter samples for elements with atomic number Z ≥ 13 3–5 …”

“…The energy of the emitted x-ray radiation is characteristics for the emitting element, its intensity is related to the concentration of the element in the irradiated sample. 2,3 EDXRF technique has a number of advantages, such as capability for quantitative multi elemental and simultaneous analysis of all elements with atomic number Z > 10, relatively simple measurement setup, minimal or no need at all for sample preparation, and in the case of thin sample deposits straightforward calibration methodology. As every analytical technique EDXRF has also weak points which include rather moderate detection capability, especially at the low-Z side of its analytical range, presence of interelement interfering effects, need for correcting matrix effects for samples where x-ray absorption phenomena cannot be neglected, lack of capability for detecting such elements as H, C, N which constitute majority of mass for samples with organic matrix.…”

“…Both effects (reduction of background radiation and selection of appropriate set of secondary targets) combined with optimized x-ray source-secondary target-sample-detector pathlength resulted in a simple but effective measurement system suitable for determination of element concentrations in air particulate matter samples for elements with atomic number Z ≥ 13. [3][4][5] This work presents the capabilities of the in-house constructed secondary target EDXRF spectrometer system in terms of the determined elemental sensitivities, detection limits of elements as well as trueness and precision of analytical results based on measurements of standard reference materials and air particulate matter samples collected in Krakow, Poland.…”