Estimation of radionuclide ingestion

The 'PATHWAY' food-chain model

F. Ward Whicker, T. B. Kirchner, David D Breshears, M. D. Otis

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

This paper describes the structure of the dynamic food-chain model PATHWAY and its utility for estimating radionuclide ingestion after fallout deposition from nuclear testing in Nevada. Model input requirements are described and output examples are provided. The basic output of PATHWAY is the time-integrated radionuclide ingestion by humans per unit fallout deposition (Bq per Bq m-2). Output specific to sex, age, life-style (diet), location (agricultural practice), event (calender date), and radionuclide may be generated. Uncertainties of model predictions, based on 'Monte Carlo' simulations using parameter value distributions, are described. Results of a sensitivity analysis, based on a ranking of partial correlation coefficients, are reviewed to illustrate the relative importance of parameters and associated transport pathways. Output data for 131I and 137Cs in milk are compared with predictions from several well known food-chain models. Preliminary efforts to validate PATHWAY results with real data sets are described.

Original languageEnglish (US)
Pages (from-to)645-657
Number of pages13
JournalHealth Physics
Volume59
Issue number5
StatePublished - 1990
Externally publishedYes

Fingerprint

food chain
ingestion
Food Chain
Radioisotopes
radioactive isotopes
radionuclide
Eating
Fallout
fallout
output
Calenders
diets
Uncertainty
milk
ranking
Life Style
Milk
sensitivity analysis
Nutrition
prediction

ASJC Scopus subject areas

  • Environmental Science (miscellaneous)
  • Health, Toxicology and Mutagenesis
  • Toxicology
  • Physics and Astronomy (miscellaneous)
  • Public Health, Environmental and Occupational Health
  • Environmental Chemistry
  • Environmental Science(all)

Cite this

Ward Whicker, F., Kirchner, T. B., Breshears, D. D., & Otis, M. D. (1990). Estimation of radionuclide ingestion: The 'PATHWAY' food-chain model. Health Physics, 59(5), 645-657.

Estimation of radionuclide ingestion : The 'PATHWAY' food-chain model. / Ward Whicker, F.; Kirchner, T. B.; Breshears, David D; Otis, M. D.

In: Health Physics, Vol. 59, No. 5, 1990, p. 645-657.

Research output: Contribution to journalArticle

Ward Whicker, F, Kirchner, TB, Breshears, DD & Otis, MD 1990, 'Estimation of radionuclide ingestion: The 'PATHWAY' food-chain model', Health Physics, vol. 59, no. 5, pp. 645-657.
Ward Whicker, F. ; Kirchner, T. B. ; Breshears, David D ; Otis, M. D. / Estimation of radionuclide ingestion : The 'PATHWAY' food-chain model. In: Health Physics. 1990 ; Vol. 59, No. 5. pp. 645-657.
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