山东省某轻稀土矿区粮食中稀土元素含量与健康风险  

Rare earth elements in crops and their health risk in a light rare earth elements mine in Shandong

作　　者：刘丹茹[1] 庄茂强[1] 宗金文 杨路平[1] 王克波[1] 肖培瑞[1] 赵金山[1] 褚遵华[1] 王连森[1] 周景洋[1] 李素云[1] 

机构地区：[1]山东省疾病预防控制中心食品与营养所,山东济南250014

出　　处：《环境与健康杂志》2017年第7期595-598,共4页Journal of Environment and Health

基　　金：山东省医药卫生科技发展计划(2014WS0372;2015WS0281)

摘　　要：目的了解山东某轻稀土矿区与非矿区粮食中稀土元素含量及其健康风险。方法于2014年7—10月,采集调查区域内村民自己种植的粮食(小麦、玉米和大豆)样品339份,采用电感藕合等离子体质谱仪(ICP-MS)测定15种稀土元素的含量。结果矿区粮食中总稀土元素含量为9.85~4 268.39μg/kg,中位数为82.47μg/kg;非矿区粮食中总稀土元素含量为1.55~2 662.31μg/kg,中位数为54.75μg/kg。矿区和非矿区粮食中稀土元素含量差异无统计学意义(P>0.05)。矿区和非矿区均为小麦稀土元素含量最高(128.79μg/kg和85.14μg/kg),玉米最低(44.89μg/kg和37.95μg/kg)。粮食中稀土元素以富集轻稀土元素为特征。通过粮食摄入的稀土元素远小于健康指导值。结论矿区和非矿区粮食中稀土元素含量无差异,以轻稀土元素为主,通过小麦、玉米、大豆摄入的稀土元素不会危害人体健康。Objective To investigate the contents of rare earth elements（REE） in the cereals from a light rare earth mine,and to assess their health risk in Shandong. Methods A total of 339 samples, locally grown cereals,were collected from mining and non-mining areas from July to October 2014. The contents of 15 REEs were determined by inductively coupled plasma-mass spectrometry（ICP-MS）. Results The REEs levels of cereals in mining area ranged from 9.85 μg/kg to 4 268.39 μg/kg with a median of 82.47 μg/kg. The REE levels of cereals in non-mining area ranged from 1.55 μg/kg to 2 662.31 μg/kg with a median of 54.75 μg/kg. The difference of REE between mining and non-mining areas was not statistically significant（P〉0.05）. For both areas, the highest REE levels were found in wheat（128.79 μg/kg and 85.14 μg/kg） and the lowest in corn（44.89 μg/kg and37.95 μg/kg）. Light rare earth elements（LREE） were dominantly enriched in cereals. The REE intake is lower than the acceptable daily intake（ADI） value and will not endanger human health. Conclusion There is no significant difference in REE in cereals between mining and non-mining areas,which are dominantly LREE. The REE intake through wheat,corn,and soybean consumption will not damage human health.

关 键 词：小麦 玉米 大豆 稀土元素 健康风险 

分 类 号：R155.5[医药卫生—营养与食品卫生学]