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Nuklearmedizin 1963; 03(02): 175-182
DOI: 10.1055/s-0037-1621214
Originalarbeiten — Original Articles — Travaux Originaux
Schattauer GmbH

Gamma-Ray Spectrometric Analysis of Some Trace Elements in the Human Articular Disc of the Mandible

Bo Bergman
1   From the Biophysics Laboratory, the Department of Prosthetics, the Royal School of Dentistry, Stockholm, Sweden
,
Rune Söremark
1   From the Biophysics Laboratory, the Department of Prosthetics, the Royal School of Dentistry, Stockholm, Sweden
› Author Affiliations
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Publication History

Publication Date:
09 January 2018 (online)

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Summary

By means of neutron activation and gamma-ray spectrometry the concentrations in the human mandibular articular disc of the following elements have been determined: Na, Mn, Cu, Zn, Rb, Sr, Cd, W, and Au. The discs were obtained at necropsy from seven men and nine women, ranging in age from 56 to 71 years.

The activation was carried out in a thermal neutron flux of about 1.7 XlO12 neutrons × cm−2 × sec.−1 for about 20 hours. A chemical group separation

was performed before the gamma-ray spectrometry. Quantitative data based on the dry weight of the cartilage samples were obtained by comparing the photo-peak area of the identified elements with those of appropriate standards.

Zusammenfassung

Mit Hilfe der Neutronen-Aktivitäts-Analyse und der Gammaspektrometrie werden die Konzentrationen der folgenden Spuren-Elemente im menschlichen Discus articularis mandibulae bestimmt (Na, Mn, Cu, Zn, Rb, Sr, Cd, W und Au).

Die Knorpelscheiben waren bei Autopsien von 7 Männern und 9 Frauen im Alter zwischen 56 und 71 Jahren gewonnen worden. Die Aktivierung geschah bei einem thermischen Neutronenfluß bei 1,7 × 1012 n × cm−2 × sec−1 für 20 h.

Eine chemische Trennung in Gruppen erfolgte vor der Gammaspektrometrie. Quantitative Daten bezogen auf das Trockengewicht der Knorpelproben wurden durch Vergleich der Fläche des Photo-Peaks der zu bestimmenden Elemente mit derjenigen geeigneter Standards erhalten.

Résumé

A l’aide d’activation de neutrons et de la spectrométrie des rayons gamma les concentrations des éléments suivants ont été déterminées dans le disque articulaire de la mandibule humaine: Na, Mn, Cu, Zn, Rb, Sr, Cd, W et Au. On a obtenu les disques à l’occasion de l’autopsie de 7 hommes et 9 femmes âgés de 56 à 71 ans.

L’activation a été effectuée dans un écoulement thermal de neutrons de 1.7 × 1012 neutrons × cm−2 × sec−1, pendant 20 heures à peu près. Une séparation chimique de groupes a été faite avant la spectrométrie de rayons gamma. Des dates quantitatives basées sur le poids sec des échantillons de cartilage ont été obtenues par une comparaison entre la région des photo-peak des éléments identifiés et ceux des préparations standardisées.

 

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