Uptake of U-and Th-series radionuclides by cereal crops in Upper Egypt  

作　　者：SHABAN Harb ROLF Michel 

机构地区：[1]Center for Radiation Protection and Radioecology,Hanover University(ZSR) [2]Physics Department,Faculty of Science,South Valley University

出　　处：《Nuclear Science and Techniques》2009年第2期99-105,共7页核技术（英文）

摘　　要：The main aim of this study is to determine the activity concentrations of uranium series and thorium series radionuclide in crops cultivated in Upper Egypt.Fifteen types of cereal crops were collected from local markets and analyzed by γ-ray spectrometry.The mean activity concentrations of the natural radionuclides 238U,226Ra and 232Th were 0.67,1.27 and 0.56 Bq·kg-1,respectively.The annual effective doses from these radionuclides were estimated for different age groups.AbThe main aim of this study is to determine the activity concentrations of uranium series and thorium series radionuclide in crops cultivated in Upper Egypt. Fifteen types of cereal crops were collected from local markets and analyzed by γ-ray spectrometry. The mean activity concentrations of the natural radionuclides ^238U, ^226Ra and ^232Th were 0.67, 1.27 and 0.56 Bq·kg^-1, respectively. The annual effective doses from these radionuclides were estimated for different age groups.

关 键 词：天然放射性核素 谷类作物 埃及 U型 吸收 226RA 作物栽培 有效剂量 

分 类 号：S335[农业科学—作物遗传育种]