|Appears in Collections:||Biological and Environmental Sciences Journal Articles|
|Peer Review Status:||Refereed|
|Title:||Monitoring anthropogenic radioactivity in salt marsh environments through in situ gamma-ray spectrometry|
|Keywords:||in situ gamma-ray spectrometry|
|Citation:||Tyler A (1999) Monitoring anthropogenic radioactivity in salt marsh environments through in situ gamma-ray spectrometry, Journal of Environmental Radioactivity, 45 (3), pp. 235-252.|
|Abstract:||Radionuclide bearing effluents discharged into the Irish Sea have resulted in the accumulation of radionuclides in salt marsh environments which can contribute to critical group exposures. Recent developments in in situ gamma-ray spectrometry provide a novel and effective method for monitoring anthropogenic radionuclide concentrations and distributions within these coastal environments. This paper presents the results from an in situ survey at Caerlaverock salt marsh, Dumfries, Scotland. An in situ n-type HPGe detector was used to estimate: i) a spectrally derived calibration coefficient (QCs) to map changes in 137Cs activity (kBq m-2) and its vertical activity distribution β (g cm-2); ii) sediment accretion rates (g cm-2 a-1); and iii) surface 241Am activities (Bq kg- 1) across the salt marsh. The in situ results compared favourably with sediment core derived estimates, indicating that 137Cs activities were consistently within 10-15% and 241Am was within 25% of core sample estimates, accuracies comparable with sampling errors. The vertical activity distribution β and sediment accretion rates were also mapped directly through in situ measurements. The technique is sufficiently sensitive to monitor changes in β over a 5 year interval and provides a rapid and cost-effective technique for monitoring and mapping of anthropogenic activity and sediment accretion in salt marsh environmen|
|Rights:||The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.|
|1-s2.0-S0265931X98001106-main.pdf||689.21 kB||Adobe PDF||Under Embargo until 31/12/2999 Request a copy|
Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependant on the depositor still being contactable at their original email address.
This item is protected by original copyright
Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
If you believe that any material held in STORRE infringes copyright, please contact email@example.com providing details and we will remove the Work from public display in STORRE and investigate your claim.