Natural radioactivity in winter wheat from organic and conventional agricultural systems

详细信息    查看全文

• 作者：Patric Lindahl^a ; Alain Maquet^a ; Mikael Hult ; ^a ; ^{mikael.hult@ec.europa.eu} ; Jo&#xeb ; l Gasparro^a ; Gerd Marissens^a ; Raquel Gonzá ; lez de Orduñ ; a^a
• 关键词：Natural radionuclides ; Wheat ; Soil ; Organic farming ; Conventional farming
• 刊名：Journal of Environmental Radioactivity
• 出版年：2011
• 出版时间：February 2011
• 年：2011
• 卷：102
• 期：2
• 页码：163-169
• 全文大小：334 K

文摘

The distribution of natural radionuclides was studied in winter wheat plants collected from three sites in Belgium during 2004–2007. Activity concentrations of ⁴⁰K, ²²⁶Ra, ²²⁸Ra and ²²⁸Th in organically and conventionally grown wheat, and in the corresponding soil samples, were determined using ultra low-level gamma-ray spectrometry. The observed soil-to-wheat concentration ratios were calculated for the different parts of the wheat plant (root, stem and grain) in the two agricultural systems (organic and conventional). There were large variations in radionuclide activity concentrations between the sites and fields, but no significant difference between conventionally and organically grown wheat plants was observed.