Abstract:
:The (90)Sr and (137)Cs activities of soil, plant, and milk samples from the village of Dolon, located close to the Semipalatinsk Nuclear Test Site in Kazakhstan, were determined. The areal deposition at the nine sampling sites is in the range of <500 to 6,100 Bq m(-2) and 300 to 7,900 Bq m-2 for (90)Sr and (137)Cs, respectively. Similar values have been reported in the literature. At some of the sites both nuclides mainly have remained in the top 6 cm of the soil profiles; at others they were partly transported into deeper soil layers since the deposition. For most of the samples the (90)Sr yield after destruction of the soil matrix is significantly higher than after extracting with 6 M HCl indicating that (90)Sr is partly associated with fused silicates. The low mean (90)Sr activity concentrations of vegetation samples (14 Bq kg(-1) dw) and milk samples (0.05 Bq kg(-1) fw) suggest that this has favorable consequences in terms of limiting its bioavailability.
journal_name
Health Physjournal_title
Health physicsauthors
Gastberger M,Steinhäusler F,Gerzabek MH,Hubmer A,Lettner Hdoi
10.1097/00004032-200009000-00005keywords:
subject
Has Abstractpub_date
2000-09-01 00:00:00pages
257-65issue
3eissn
0017-9078issn
1538-5159journal_volume
79pub_type
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