物探与化探2018，Vol.42Issue(3)：518-527,10.DOI:10.11720/wtyht.2018.1308
风成砂覆盖区地电化学提取前后土壤中元素赋存状态变化研究
Variation of modes of occurrence of elements in soil before and after the geo-electrochemical extraction in eolian sand covered area
摘要
Abstract
In this study,soil samples before and after geo-electrochemical extraction were collected along the fifth exploration line of the Luokedun lead-zinc polymetallic mining area. Total content and chemical speciation of'seven steps method'were analyzed for 20 el-ements. Some conclusions have been reached:Elements extracted by geo-electrochemical process exist in a variety of phases in soil. The active phases including water soluble,exchangeable and carbonate bound phases are the mainly components,while micro-particles that exist in low active phases including residues can also be migrated and adsorbed by this process. Spatial distribution of element val-ues of some active phases in soil appear to be highly consistent with spatial position of the orebody after geo-electrochemical extraction. Factors such as low depth transported overburden and orebody or mineralized body beneath the cover can lead to a significant increase of total content in soil for the majority of metal elements after the extraction process. Such phenomena indicate that the method of geo-electrochemistry has great applicability in the transported overburden area.关键词
地电化学/元素赋存状态/风成砂/顺序提取/洛恪顿多金属矿Key words
geo-electrochemisty(CHIM)/modes of occurrence of elements/eolian sand/sequential extraction/Luokedun polymetal-lic ore deposit分类
天文与地球科学引用本文复制引用
孙彬彬,曾道明,刘占元,周国华,贺灵..风成砂覆盖区地电化学提取前后土壤中元素赋存状态变化研究[J].物探与化探,2018,42(3):518-527,10.基金项目
国家重点研发计划"深穿透地球化学勘查技术"(2016YFC0600600)及地质调查项目"东乌旗整装勘查区热磁与地电化学方法技术研究应用(12120113100400)"联合资助 （2016YFC0600600）
