| 周徐维,田欢,谢淑云,Diego Armando Pinzon Nunez,马真真,张宏宇.陕西紫阳富硒地层硒赋存形式及地球化学意义研究[J].贵州地质,2023,40(1):78-87 |
| 陕西紫阳富硒地层硒赋存形式及地球化学意义研究 |
| Research of Se Occurrence Form and Geochemical Significance of Se-enriched Stratum in Ziyang of Shanxi |
| 投稿时间：2022-11-12 |
| DOI： |
| 中文关键词: 陕西紫阳 富硒地层 硒含量 硒形态 四步五态顺序提取法 |
| 英文关键词:Ziyang Shanxi Selenium-rich strata Selenium content Selenium form Four-step five-state sequential extraction method. |
| 基金项目:国家自然科学基金青年基金项目“紫阳下寒武统黑色岩系内富硒黄铁矿形成机理研究” (42003035)和“中央高校基本科研业务费专项资金资助项目”(CUG170104)联合资助。 |
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| 中文摘要: |
| 硒是与生物密不可分的微量元素，其含量和赋存形态对人们的生产生活至关重要，本文选择典型富硒地区陕西紫阳，测定该地区地层中29个不同岩性岩石样品的Se含量，探明了该区岩石组合主要以富硒的碳质板岩、硅质岩、黑色页岩和含黄铁矿煤样为主，而在灰岩中硒的富集程度不强。选取14个典型富硒岩石和煤样品，通过四步五态顺序提取法，阐明了硒的五种赋存形态特征及其环境地球化学意义:陕西紫阳地区岩石硒形态以硫/硒化物结合状态为主，残渣态、有机结合状态硒次之，紫阳地区沉积环境偏还原性。本文为深入认识陕西紫阳地区富硒岩石硒含量和硒迁移转化行为及富硒矿产资源综合开发利用提供了数据基础和理论指导。 |
| 英文摘要: |
| Selenium is an inseparable trace element for us，its content and occurrence form are very important for people’s production and life，this paper selects the typical selenium-rich area of Ziyang，Shaanxi，to determine the Se content of 29 different lithology rock samples in the strata of this area，and it is found that the rock assemblage in this area is mainly selenium-rich carbonaceous slate，siliceous rock，black shale and pyrite-bearing coal samples，while the concentration of selenium in limestone is not strongFourteen typical selenium-rich rock and coal samples were selected and the five morphological characteristics of selenium and their environmental geochemical significance were clarified by four-step five-state sequential extraction:the selenium morphology of rocks in Ziyang area of Shaanxi was dominated by sulfur/selenide binding state，followed by selenium in residual state and organic binding state，and the sedimentary environment in Ziyang area was reducibleThis paper provides data basis and theoretical guidance for in-depth understanding of selenium-rich rock selenium content and selenium migration and transformation behavior in Ziyang area of Shaanxi Province and the comprehensive development and utilization of selenium-rich mineral resources |
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