Nom du corpus

Corpus Systématique Animale

Titre du document

Neptunium-237 in the marine environment determination in animal and plant species in the English Channel: Biological indicators and trophic relationships

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Mollusques_v2b_00710
Auteur(s)
  • P. Germian 1
  • G. Pinte 2
Affiliation(s)
  • 1) Laboratoire de Radioecologie Marine, CEA, IPSN, DERS, SERE, B.P. 508 50105, Cherbourg Cedex, France
  • 2) Laboratoire d'analyse par activation Pierre Sue, CEA, IRDI, DERDCA, DCAEA, CEN/SACLAY9119, Gif Sur Yvette, France
Résumé

We have studied the uptake of237Np in marine plants and animals belonging to several phyla, and collected samples from the end of January 1986 to March 1986, in a sampling station situated near the outlet of the irradiated fuel reprocessing plant at La Hague. We determined the237Np by neutron activation analysis. This method is very sensitive, with a limit of detection of 5×10?10 mg, 1.3×10?2 mBq. The method consists of the following steps: Reduction of the neptunium to the tetravalent state by treatment with a mixture of hydrazine sulfate and ferrous iron-chromatographic separations on Dowex 1×10 resin in a nitric medium, then in a hydrochloric medium-neutron irradiation in a nuclear reactor-purification of the neptunium by chromatography on Dowex 1×10 resin in a nitric then hydrochloric medium-measurement of the isotope238Np by gamma ray spectrometry using a Ge(Li) detector. The species were collected at Goury, at the northwest extremity of the Cotentin Peninsula, 5 km from the outlet of the reprocessing plant at La Hague. The levels of237Np were as follows: red algaeCorallina officinalis 64 mBq kg?1 wet weight; andChondrus crispus 18 mBq kg?1 wet weight; the spongeHalichondria panicea 14 mBq kg?1 wet weight; the ascidianDendrodoa grossularia 12 mBq kg?1 wet weight. The bivaive molluscsPatella vulgata andGibbula umbilicalis (the flesh ofP. vulgata andG. umbilicalis: 4 and 7 mBq kg?1 wet weight respectively) also prove to be interesting biological indicators The transfer modes of237Np to the various species as a function of their trophic levels are discussed as well as the distribution among the organs in the species consumed and the radiological impact of human consumption.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - chemistry
  • 3 - inorganic & nuclear chemistry
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - biophysique des tissus, organes et organismes
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Health, Toxicology and Mutagenesis
  • 1 - Health Sciences ; 2 - Medicine ; 3 - Public Health, Environmental and Occupational Health
  • 1 - Physical Sciences ; 2 - Chemistry ; 3 - Spectroscopy
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Pollution
  • 1 - Health Sciences ; 2 - Medicine ; 3 - Radiology Nuclear Medicine and imaging
  • 1 - Physical Sciences ; 2 - Energy ; 3 - Nuclear Energy and Engineering
  • 1 - Physical Sciences ; 2 - Chemistry ; 3 - Analytical Chemistry
Catégories WoS
  • 1 - science ; 2 - nuclear science & technology
  • 1 - science ; 2 - chemistry, inorganic & nuclear
  • 1 - science ; 2 - chemistry, analytical
Identifiant ISTEX
CB035D88CCDBE0AFEBFDA1FFE26210D96C9C0045
Revue

Journal of Radioanalytical and Nuclear Chemistry

Année de publication
1990
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.346
Sous-corpus
  • Mollusques
Type de publication
Journal
ark:/67375/1BB-8XWXLB11-8
Powered by Lodex 9.3.8