Authors:
Ph. Albert Laboratoire d'analyse par activation du Centre d'Etudes de Chimie Métallurgique du CNRS Vitry (France)

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J. Blouri Laboratoire d'analyse par activation du Centre d'Etudes de Chimie Métallurgique du CNRS Vitry (France)

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Ch. Cleyrergue Laboratoire d'analyse par activation du Centre d'Etudes de Chimie Métallurgique du CNRS Vitry (France)

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N. Deschamps Laboratoire d'analyse par activation du Centre d'Etudes de Chimie Métallurgique du CNRS Vitry (France)

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J. Le Hericy Laboratoire d'analyse par activation du Centre d'Etudes de Chimie Métallurgique du CNRS Vitry (France)

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Abstract  

The chemical separation of sulphur and phosphorus from pure iron and nickel, is described. Sulphur has been determined first by irradiation in fast neutrons, then by irradiation in mixed fast and thermal neutrons. The two methods gave two different results; so, we were led to point out the same phenomenon asJ. Le Hericy had already pointed out for the determination of sulphur in copper. We found that the abnormal amounts of sulphur came from external contamination with chlorine since sulphur is then produced by the35Cl(n, p)35S reaction. The diffusion of35S atoms (produced on the edge of the samples) explains that the concentration of sulphur decreases from the edge to the middle of the sample. We prepared samples of iron and nickel, artificially covered with ammonium chloride, and we studied the apparent concentration of sulphur as a function of the depth in these samples. Our experiences pointed out that the contamination in sulphur yielded by the (n, p) reaction, reaches very quickly the middle of the samples. This phenomenon limits the determination of sulphur by the34S(n, γ)35S reaction, in nickel and iron.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)