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In-air micro-PIXE chemical state analysis of phosphorus and sulfur using a new parallel-beam wavelength-dispersive X-ray emission spectrometer
ID
Kavčič, Matjaž
(
Avtor
)
PDF - Predstavitvena datoteka,
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(2,23 MB)
MD5: 9F36C939918C90123FFAADFF329D4DEB
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S0584854724000703
Galerija slik
Izvleček
The proton induced K X-ray emission spectra of several different phosphorus and sulfur compounds were recorded with the new parallel-beam wavelength dispersive X-ray emission spectrometer. The spectrometer was installed recently at the external proton microbeam at the J. Stefan Institute to perform high energy resolution in-air micro-PIXE analysis in the tender X-ray range. Reported measurements are used to probe the capabilities of the spectrometer to perform also chemical state analysis. For phosphorus measurements, where the energy resolution of the spectrometer is the highest, a clear correlation between measured energy position of the Kα emission line and the phosphorus formal oxidation state is obtained. Chemical contrast is increased further in the Kβ emission spectra reflecting the structure of occupied valence molecular orbitals defined by the first coordination shell around the central phosphorus atom. A reasonable chemical contrast is maintained also in the sulfur Kβ emission spectra, despite the fact that the energy resolution of the spectrometer declines with increasing X-ray energy. Finally, an example of phosphorus speciation in reference biological material is presented, demonstrating the feasibility of the new setup to extend the capabilities of in-air micro-PIXE analysis towards chemical speciation.
Jezik:
Angleški jezik
Ključne besede:
chemical speciation
,
in-air micro-PIXE analysis
,
phosphorus
,
sulfur
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FMF - Fakulteta za matematiko in fiziko
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2024
Št. strani:
6 str.
Številčenje:
Vol. 215, art. 106926
PID:
20.500.12556/RUL-156327
UDK:
539
ISSN pri članku:
0584-8547
DOI:
10.1016/j.sab.2024.106926
COBISS.SI-ID:
193910275
Datum objave v RUL:
20.05.2024
Število ogledov:
200
Število prenosov:
67
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Spectrochimica acta. Part B, Atomic spectroscopy
Skrajšan naslov:
Spectrochim. acta, Part B: At. spectrosc.
Založnik:
Elsevier
ISSN:
0584-8547
COBISS.SI-ID:
26433536
Licence
Licenca:
CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:
Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
fizika
,
analizna kemija
,
spektroskopija
Projekti
Financer:
EC - European Commission
Program financ.:
H2020
Številka projekta:
824096
Naslov:
Research And Development with Ion Beams – Advancing Technology in Europe
Akronim:
RADIATE
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P1-0112
Naslov:
Raziskave atomov, molekul in struktur s fotoni in delci
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