Monitoring of the vegetable garden open air spinach and soil radioactivity in Beijing during the Japan Fukushima nuclear accident

VernacularTitle:福岛核事故期间北京某菜园露天菠菜和土壤的放射性水平监测
Author: Qiang ZHOU ; Cuihua XU ; Fei TUO ; Jing ZHANG ; Wenhong LI ; Qing ZHANG ; Weijun ZHANG ; Jianfeng ZHANG ; Xu SU
Publication Type:Journal Article
Keywords: Fukushima nuclear accident; Spinach; 131Ⅰ; γ spectrometry
From: Chinese Journal of Radiological Medicine and Protection 2012;(6):635-637
CountryChina
Language:Chinese
Abstract: Objective To detect artificial radionuclide content in the spinach and soil in open air vegetable garden in Beijing during Fukushima nuclear accident and to study the radioactive contamination characteristics of the samples.Methods 6 spinach samples and 3 soil samples in open air vegetable garden were obtained through continuously sampling.High-purity germanium (HPGe) γ spectrometry was used to analyze activity concentrations of artificial radionuclide131 Ⅰ etc in these samples.Results Artificial radionuclide 131Ⅰ was detected in the 6 open air spinach samples.Artificial radionuclide 137Cs was detected in 3 vegetable garden soil samples,trace amount of 131 Ⅰ was detected in 1 open-air surface soil sample alone.Conclusions Following the Fukushima nuclear accident,spinach in Beijing's open-air vegetable garden was slightly polluted by artificial radionuclide 131 Ⅰ,with the highest values of pollution appeared around April 4,2011,but it could not cause harm to human health.