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Titolo:
RADIOACTIVE POLLUTION OF THE OB RIVER SYSTEM FROM URALS NUCLEAR ENTERPRISE MAJAK
Autore:
TRAPEZNIKOV A; AARKROG A; POZOLOTINA V; NIELSEN SP; POLIKARPOV G; MOLCHANOVA I; KARAVAEVA E; YUSHKOV P; TRAPEZNIKOVA V; KULIKOV N;
Indirizzi:
INST PLANT & ANIM ECOL,8 MARCH ST 202 SVERDLOVSK 620219 RUSSIA
Titolo Testata:
Journal of environmental radioactivity
fascicolo: 1-2, volume: 25, anno: 1994,
pagine: 85 - 98
SICI:
0265-931X(1994)25:1-2<85:RPOTOR>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
A. Trapeznikov et al., "RADIOACTIVE POLLUTION OF THE OB RIVER SYSTEM FROM URALS NUCLEAR ENTERPRISE MAJAK", Journal of environmental radioactivity, 25(1-2), 1994, pp. 85-98

Abstract

The Techa river belongs to the Iset-Tobol-Irtysh-Ob rivet system. Around 1950 the Techa was contaminated with medium and high level radioactive waste from the MAJAK nuclear installation. The total discharge amounted to 100 PBq; Sr-90 and Cs-137 contributed 11.6% and 12.2% respectively. Presently the Techa contains about 0.3 TBq Sr-90, more than 6 TBq Cs-137 and about 8 GBq Pu-239,Pu-240. The levels of the radionuclides upstream are several orders of magnitude higher than those expected from global fallout The activity concentrations decrease exponentially or by power functions with distance. The study has shown that the contamination of the soil of the Techa flood plain is 15-85 times higher than global fallout levels. There is an unexplained radioactive contamination in the Iset river after confluence with the Techa.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 19:45:10