Inventories of fallout 210Pb and 137Cs radionuclides in moorland and woodland soils around Edinburgh urban area (UK)

Likuku, A. S.; Branford, D.; Fowler, D.; Weston, K. J.. 2006 Inventories of fallout 210Pb and 137Cs radionuclides in moorland and woodland soils around Edinburgh urban area (UK). Journal of Environmental Radioactivity, 90. 37-47. 10.1016/j.jenvrad.2006.06.006

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Official URL: http://www.sciencedirect.com/science/journal/02659...

Abstract/Summary

Inventories of fallout 210Pb and 137Cs have been measured in moorland and woodland soils around the Edinburgh urban area, using a high purity germanium detector. The 210Pb inventories in moorland soils were relatively uniform, with a mean value of 2520 ± 270 Bq m−2. The mean 137Cs inventory in moorland soils varied greatly from 1310 to 2100 Bq m−2, with a mean value of 1580 ± 310 Bq m−2. The variability was ascribed mainly to the non-uniform distribution of fallout Chernobyl 137Cs. The mean 210Pb and 137Cs inventories in woodland canopy soils were found to be 3630 ± 380 Bq m−2 and 2510 ± 510 Bq m−2, respectively. At sites for which both moorland and woodland data were available, the mean inventories provided fairly similar average enhancements of (47 ± 7)% and (46 ± 18)% of 210Pb and 137Cs under woodland canopy soils relative to open grassland soils, respectively. The enhancement factors are broadly in line with other independent findings in literature. Enhancement of both 210Pb and 137Cs in woodland soils relative to moorland soils is, in part, due to deposition by impaction during air turbulence, wash-off, gravitational settling and deposition during leaf senescence. Results of this study suggest that these processes affect both 210Pb and 137Cs carrier aerosols in a similar way.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1016/j.jenvrad.2006.06.006
Programmes:	CEH Programmes pre-2009 publications > Biogeochemistry
UKCEH and CEH Sections/Science Areas:	_ Atmospheric Sciences
ISSN:	0265-931X
Format Availability:	Electronic, Print
Additional Keywords:	Soil, 210Pb, 137Cs, Moorland, Woodland, Specific activity, Inventory
NORA Subject Terms:	Atmospheric Sciences
Date made live:	29 Jun 2007 15:31 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/393

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1016/j.jenvrad.2006.06.006

Programmes:

CEH Programmes pre-2009 publications > Biogeochemistry

UKCEH and CEH Sections/Science Areas:

_ Atmospheric Sciences

ISSN:

0265-931X

Format Availability:

Electronic, Print