华东某铀矿区稻米中Pb含量特征及污染研究  

Pb contents and contamination assessment of rice in a uranium mine,East China

作　　者：魏长帅[1,2] 刘平辉[1,3] 袁瑾[2] 张淑梅[1] 

机构地区：[1]东华理工大学地球科学学院,江西南昌330013 [2]安徽省地质矿产勘查局326地质队,安徽安庆246000 [3]核资源与环境国家重点实验室,江西南昌330013

出　　处：《地质学刊》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)

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.

关 键 词：稻米 PB含量 污染评价 铀矿 华东 

分 类 号：X508[环境科学与工程—环境工程] O614.433[理学—无机化学]