کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4429408 1619824 2012 10 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Allometric methodology for the assessment of radon exposures to terrestrial wildlife
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موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Allometric methodology for the assessment of radon exposures to terrestrial wildlife
چکیده انگلیسی

A practical approach to calculate 222Rn daughter dose rates to terrestrial wildlife is presented. The method scales allometrically the relevant parameters for respiration in different species of wildlife, allowing inter-species calculation of the dose per unit radon concentration in air as simple base-and-exponent power functions of the mass. For plants, passive gas exchange through the leaf surface is assumed, also leading to specific power relationships with mass.The model generates conservative predictions in which the main contributor to the dose rate of target tissues of the respiratory system is from α radiation arising from 222Rn daughters. Tabulated 222Rn DPURn values are given for 69 species used by the England & Wales Environment Agency for habitats assessments. The approach is then applied to assess the authorised discharges of 222Rn from sites in England, demonstrating that, from a whole-body dose perspective, the biota considered are protected from effects at the population level.


► Allometric method developed to calculate radon daughter doses to 69 species of terrestrial wildlife.
► Model satisfactorily compared with previous studies of lung dose rates for mammals.
► The main contributor to the dose rate of the respiratory system is internal α-radiation from the 222Rn daughters.
► Air immersion is the principal contributor to the external dose rate.
► Assessment for 7 authorised sites in England suggests that wildlife populations are adequately protected from the anthropogenic radon emissions considered in this study.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 427–428, 15 June 2012, Pages 50–59
نویسندگان
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