Abstract
Beryllium-7 (7Be) activity in maize was measured in Yangling County, Shaanxi Province, on the Loess Plateau Region of China in 2007. The 7Be mass activity concentration in maize leaf samples was significantly greater than in maize stem, maize root and maize grain samples. The 7Be activity in maize leaves accounted for 78% of the total maize 7Be activity. The 7Be mass activity concentration in maize varied from 25.4 to 122.4 Bq kg−1 and areal activity concentration held by maize from 1.2 to 111.5 Bq m−2 during the growth period. The percentage of 7Be areal activity concentration held by maize relative to the 7Be areal activity concentration measured in reference soils ranged from 0.4 to 24.2% with a mean of 13.7%.
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