Modelling the biological half-life and seasonality of 14C in Fucus vesiculosus from the east coast of Ireland: Implications for the estimation of future trends

被引：2

作者：

Keogh, S. M. ^{[1
]}

Cournane, S. ^{[1
]}

Vintro, L. Leon ^{[1
]}

McGee, E. J. ^{[1
]}

Mitchell, P. I. ^{[1
]}

机构：

[1] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland

来源：

MARINE POLLUTION BULLETIN | 2011年 / 62卷 / 04期

关键词：

Fucus vesiculosus; C-14; Seasonal variation; Sellafield; Autoregressive model; FUEL-REPROCESSING PLANT; IRISH SEA; TIME-SERIES; LA-HAGUE; SPACED DATA; TC-99; VICINITY; CHANNEL;

D O I：

10.1016/j.marpolbul.2011.01.028

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Radiocarbon levels were recorded in Fucus vesiculosus samples collected on a monthly basis over a three-year period at a site on the east coast of Ireland. The resulting data was analysed using a numerical model which estimates the transit times from the Sellafield plant to the sampling location, and the mean availability time of C-14 in seaweed. With the inclusion of a model parameter allowing for seasonal variability in uptake by the Fucus, good correlation was observed between the predicted and measured concentrations. Future temporal trends of C-14 Fucus concentrations along the eastern Irish coastline were modelled with the application of three possible prospective discharge scenarios, predicting C-14 Fucus concentrations to reduce to ambient background levels within 2.5-years of discharges being set to zero. Such projections may prove helpful in assessing the consequences of discharge management and policy making in the context of the OSPAR convention. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：696 / 700

页数：5