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The quantitative analysis of Sb, Ag, Zn, Co and Fe in human dental calculus by neutron activation analysis and high‐resolution gamma spectrometry
Author(s) -
Retief D. H.,
CleatonJones P. E.,
Turkstra J.,
Smit H. J.
Publication year - 1973
Publication title -
journal of periodontal research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.31
H-Index - 83
eISSN - 1600-0765
pISSN - 0022-3484
DOI - 10.1111/j.1600-0765.1973.tb00766.x
Subject(s) - neutron activation analysis , analyser , radiochemistry , antimony , analytical chemistry (journal) , neutron activation , neutron , materials science , mass spectrometry , zinc , chemistry , nuclear chemistry , metallurgy , physics , chromatography , nuclear physics
The sample to be analysed, and a standard of known composition, were irradiated simultaneously in the poolside facility of a nuclear reactor for 130 hours in a thermal neutron flux of approximately 2×10 13 n.cm −2 . sec −1 , and the induced radioactivity compared after a cooling period of four weeks. The investigation was done with a high resolution Ge(Li) detector coupled to a fully transistorized 4000 channel analyser. The concentration of five elements, namely Sb, Ag, Zn, Co and Fe, was determined in human dental calculus by instrumental activation analysis and found to be 0,68 ppm, 0,18 ppm, 174 ppm, 0,08 ppm and 54 ppm respectively.