摘要
对华东某铀矿区及对照区稻米中重金属元素Pb的含量进行了研究。该铀矿区尾矿坝、尾矿堆积区、矿床开采区、矿床开采区上游以及下游、矿石矿渣运输道路沿线稻米中Pb含量与位于铀矿区边缘的某村(受矿区水及大气影响)以及非铀矿区某村(不受矿区水系及大气影响)稻米中的Pb含量接近,均未超过国家食品污染限量标准(GB 2762—2012)中谷类Pb的限量。单因素污染评价结果表明,该铀矿区和非铀矿区的稻米均没有受到重金属铅的污染。在自然界中,铅化合物的溶解度低,这可能是铅不易被水稻吸收的原因。
This study analyzed the content of the heavy metal element Pb in rice from a uranium mine in East China. The result shows that the Pb contents in rice samples from the uranium tailings dam, tailings stacking area, mine exploration area, upstream and down- stream of the mine exploration area and the uranium-transferring load are close to those from a village at the margin of a uranium mine （ affected by the mine water and atmosphere） and those from a village far from a uranium area （ not affected by mine water and atmos- phere）. None of them exceeded the national food pollution limits （ GB 2762--2012） in the standard of Pb limitation in grain. The pol- lution assessment of single factor index suggests that the rice was unpolluted in both the uranium area and the area without uranium de- posits. The reasons may be that the solubility of lead compounds is low and Pb is difficult to be absorbed by the rice.
出处
《地质学刊》
CAS
2015年第4期673-677,共5页
Journal of Geology
基金
国家自然科学基金项目(41261081)
江西省自然科学基金项目(2011ZBAB203009)
关键词
稻米
PB含量
污染评价
铀矿
华东
rice
Pb content
pollution assessment
uranium mine
East China
