汾渭盆地池南地区小麦微量元素地球化学特征  

Geochemical characteristics of trace elements of wheat in Chinan area of Fenwei basin

作　　者：马丽 何金先[2] 武剑 黄正鑫 张福敏 谢国梁 MA Li;HE Jinxian;WU Jian;HUANG Zhengxin;ZHANG Fumin;XIE Guoliang(Shanxi Branch of China National Geological Exploration Center of Building Materials Industry,Taiyuan 030031,Shanxi,China;School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China;Shanxi Geophysical and Geochemical Exploration Institute Co.,Ltd.,Yuncheng 044000,Shanxi,China)

机构地区：[1]中国建筑材料工业地质勘查中心山西总队,山西太原030031 [2]中国矿业大学资源与地球科学学院,江苏徐州221116 [3]山西省地球物理化学勘查院有限公司,山西运城044000

出　　处：《矿产与地质》2024年第4期831-838,共8页Mineral Resources and Geology

基　　金：国家重点研发计划专项(编号:2021YFC2902003);山西省地勘基金项目(编号:HXCT01-2018F005)共同资助。

摘　　要：为探究汾渭盆地池南地区冬小麦籽粒微量元素地球化学特征,采集了池南地区14个地块的冬小麦样品,对每个样品的微量元素含量进行测试,并进行了系统分析。结果表明:相比长三角小麦,池南地区小麦中Cu、Fe、Pb、Hg、Cd含量较低,Mo、Se较高,Zn、B较为接近,依据食品安全国家标准,存在Zn、Cr污染;轻、重稀土之间分馏较轻稀土之间和重稀土之间分馏均大;Ce无明显异常,Eu基本表现为正异常。摄食足量的池南地区小麦可以满足人体对Cu、Zn、Fe、Mo的需求,同时不会摄入过量的Cu、Zn、Fe、Mo、B、Se、ΣRExOy及污染物Pb、Hg、Cd、As,但可能存在摄入过量Cr的风险。通过元素富集度分析,推测池南地区土壤硒含量与小麦籽粒中硒含量应该具备线性相关性,且该区小麦达到富硒水平,结合该区土壤Se含量认为池南地区具有发展富硒小麦的潜力。In order to study on trace element geochemical characteristics of winter wheat grain in Chinan area of Fenwei basin,the samples from 14 land plots are collected and the content of trace elements is analyzed.The study result shows that compared with the wheat in Yangtze River Delta,the contents of Cu,Fe,Pb,Hg and Cd in wheat in Chinan area are lower,the contents of Mo and Se are higher,the contents of Zn and B are close.According to the national food safety standards,there is Zn and Cr pollution.It shows the stronger fractionation between LREE and HREE.There is no Ce anomaly in wheat,and Eu anomaly is positive.Sufficient intake amounts of wheat in Chinan area can meet the human body's needs for Cu,Zn,Fe,and Mo,while avoiding excessive intake of Cu,Zn,Fe,Mo,B,Se,ΣRExOy and pollutants of Pb,Hg,Cd,As,but there may be a risk of excessive intake of Cr.Through element enrichment analysis,it is speculated that there should be a linear correlation between the soil selenium content and the selenium content in wheat grains in Chinan area,and that the wheat in this area has reached a selenium rich level.Combined with the soil Se content in this area,it is considered that Chinan area has the potential to develop selenium rich wheat.

关 键 词：微量元素 摄食元素量 山西小麦 池南地区 汾渭盆地 

分 类 号：P593[天文地球—地球化学] X144[天文地球—地质学]