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Effect of a long-term release of plutonium and americium into an estuarine-coastal sea ecosystem. 1. Development of an assessment methodology

Journal Article:

Abstract

A method is developed for the assessment of the distribution and the associated hazard due to a long-term release of long-lived alpha-emitting radionuclides into surface waters of a marine ecosystem. The methodology is designed to identify various environmental compartments and the processes occurring within them, which are of importance in affecting the behaviour and thus the distribution of actinide elements in such systems. The compartment model system (box model) chosen is applied to an imaginary coastal area. Various processes in the environmental compartments are considered separately and then assembled to show their combined interactions. Using the concept of critical nuclide-pathway-group analysis, an attempt has been made to define a number of the most important pathways by which actinides released into the aquatic environment could return to man, and especially those related to the exploitation of aquatic food resources. The concentration levels for the example considered produce rather low dose rates to man of less than 3% of the maximum permissible intake. The low dose levels strongly depend upon the concentration factors of the various biological species, as well as upon source-term activities. The concentration factors used for the biological transfer of actinides relate to the water activity only. In the  More>>
Authors:
Murray, C N; Avogadro, A [1] 
  1. Commission of the European Communities, Ispra (Italy). Joint Research Centre
Publication Date:
May 01, 1979
Product Type:
Journal Article
Reference Number:
AIX-10-491058; EDB-80-036707
Resource Relation:
Journal Name: Health Phys.; (United Kingdom); Journal Volume: 36:5
Subject:
54 ENVIRONMENTAL SCIENCES; ACTINIDES; ENVIRONMENTAL EXPOSURE PATHWAY; AMERICIUM; MATHEMATICAL MODELS; PLUTONIUM; AQUATIC ECOSYSTEMS; CHRONIC INTAKE; COASTAL WATERS; COMPARTMENTS; CONTAMINATION; DISTRIBUTION; DOSE COMMITMENTS; ESTUARIES; FOOD CHAINS; HUMAN POPULATIONS; LEAKS; MAN; RADIATION HAZARDS; RADIOACTIVE WASTE DISPOSAL; RADIOECOLOGICAL CONCENTRATION; RADIONUCLIDE MIGRATION; SEA BED; SEAWATER; SEDIMENTS; UNDERGROUND STORAGE; ANIMALS; ECOLOGICAL CONCENTRATION; ECOSYSTEMS; ELEMENTS; ENVIRONMENTAL TRANSPORT; HAZARDS; HEALTH HAZARDS; HYDROGEN COMPOUNDS; INTAKE; MAMMALS; MANAGEMENT; MASS TRANSFER; METALS; OXYGEN COMPOUNDS; POPULATIONS; PRIMATES; STORAGE; SURFACE WATERS; TRANSPLUTONIUM ELEMENTS; TRANSURANIUM ELEMENTS; VERTEBRATES; WASTE DISPOSAL; WASTE MANAGEMENT; WATER; 520302* - Environment, Aquatic- Radioactive Materials Monitoring & Transport- Aquatic Ecosystems & Food Chains- (-1987)
OSTI ID:
5659077
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: HLTPA
Submitting Site:
INIS
Size:
Pages: 573-585
Announcement Date:
Feb 01, 1980

Journal Article:

Citation Formats

Murray, C N, and Avogadro, A. Effect of a long-term release of plutonium and americium into an estuarine-coastal sea ecosystem. 1. Development of an assessment methodology. United Kingdom: N. p., 1979. Web.
Murray, C N, & Avogadro, A. Effect of a long-term release of plutonium and americium into an estuarine-coastal sea ecosystem. 1. Development of an assessment methodology. United Kingdom.
Murray, C N, and Avogadro, A. 1979. "Effect of a long-term release of plutonium and americium into an estuarine-coastal sea ecosystem. 1. Development of an assessment methodology." United Kingdom.
@misc{etde_5659077,
title = {Effect of a long-term release of plutonium and americium into an estuarine-coastal sea ecosystem. 1. Development of an assessment methodology}
author = {Murray, C N, and Avogadro, A}
abstractNote = {A method is developed for the assessment of the distribution and the associated hazard due to a long-term release of long-lived alpha-emitting radionuclides into surface waters of a marine ecosystem. The methodology is designed to identify various environmental compartments and the processes occurring within them, which are of importance in affecting the behaviour and thus the distribution of actinide elements in such systems. The compartment model system (box model) chosen is applied to an imaginary coastal area. Various processes in the environmental compartments are considered separately and then assembled to show their combined interactions. Using the concept of critical nuclide-pathway-group analysis, an attempt has been made to define a number of the most important pathways by which actinides released into the aquatic environment could return to man, and especially those related to the exploitation of aquatic food resources. The concentration levels for the example considered produce rather low dose rates to man of less than 3% of the maximum permissible intake. The low dose levels strongly depend upon the concentration factors of the various biological species, as well as upon source-term activities. The concentration factors used for the biological transfer of actinides relate to the water activity only. In the case where highly radioactive sediments or sedimentary-associated material were closely involved in the uptake pathway, actinide transfer to man could become more relevant. This study shows that sedimentation and bottom sediment absorption represent the major reconcentration processes for actinides released into surface waters.}
journal = {Health Phys.; (United Kingdom)}
volume = {36:5}
journal type = {AC}
place = {United Kingdom}
year = {1979}
month = {May}
}