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邱君炜,曹建劲,刘 翔,等. 莱州湾东岸三山岛地区表层土壤矿物分析及其意义[J]. 科学技术与工程, 2020, 20(24): 9764-9770.
QIU Jun-wei,LIU Xiang,et al.Minerals of Soil in Sanshandao on the East Coast of Laizhou Bay and Its Significance[J].Science Technology and Engineering,2020,20(24):9764-9770.
莱州湾东岸三山岛地区表层土壤矿物分析及其意义
Minerals of Soil in Sanshandao on the East Coast of Laizhou Bay and Its Significance
投稿时间:2019-10-28  修订日期:2020-06-02
DOI:
中文关键词:  莱州湾东岸  近红外光谱  X射线衍射  土壤
英文关键词:east coast of Laizhou Bay  near infrared spectroscopy  X-ray diffraction  soil
基金项目:国家重点基础研究发展计划(973计划)
              
作者单位
邱君炜 中山大学地球科学与工程学院
曹建劲 中山大学地球科学与工程学院
刘 翔 中山大学地球科学与工程学院
党万强 中山大学地球科学与工程学院
邓永康 中山大学地球科学与工程学院
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中文摘要:
      为深入了解莱州湾东岸三山岛地区的表层地质特征,本次研究使用X射线衍射、近红外光谱技术和土壤含盐量测试方法,对研究区表层土壤进行矿物成分及其特征识别,综合分析发现:研究区表层土壤主要由白云母、方解石、石英、硅灰石、伊利石、高岭石、绿泥石、菱镁矿、磷灰石等9种矿物组成,根据近红外光谱特征峰分析,土壤样品中白云母Al-OH的吸收峰集中在2 206 nm附近,位于2 200~2 210 nm区间,表明其为形成于较低温度的富Al、K白云母;样品中绿泥石Fe-OH的吸收峰集中在2 245 nm处,位于2 240~2 250 nm区间,并结合X射线衍射分析结果可以确定其为富镁绿泥石,符合绿泥石在表生环境中的地球化学特征。土壤含盐量平均值为1.195 g·kg-1,属轻度盐渍化。结果表明,一方面有效地识别了研究区土壤矿物成分及组合,为未来找矿相关研究提供土壤矿物成分背景信息,另一方面,土壤矿物成分及组合与研究区地质背景和地表气候环境条件密切相关,土壤含盐量测试结果提示研究区可能存在一定的土壤盐渍化风险。使用X射线衍射和近红外光谱技术及土壤含盐量测试进行综合分析,具有快速简单、经济环保、精确可靠等优势,为土壤矿物研究提供了一种科学的技术手段和方法。
英文摘要:
      To further understand the surface geological characteristics of the Sanshandao area on east coast of Laizhou Bay, this research adopts X-ray diffraction, near infrared spectroscopy and soil salinity testing methods to identify the mineral composition and characteristics of the surface soil in the study area. The comprehensive analysis shows that the surface soil of the study area mainly consist of nine minerals, including muscovite, calcite, quartz, wollastonite, illite, kaolinite, chlorite, magnesite, apatite and other minerals. Based on the analysis of characteristic peaks of near infrared spectrum, the absorption peak of muscovite Al-OH in soil sample is concentrated around 2 206 nm within the range of 2 200~2 210 nm, indicating that it is rich in Al and K muscovite formed at lower temperature. The absorption peak of chlorite Fe-OH in the sample is concentrated at 2 245 nm within the range of 2 240~2 250 nm. Based on the X-ray diffraction analysis results, it can be determined to be magnesium-rich chlorite, which conforms to the geochemical characteristics of chlorite in supergene environment. The average salt content of soil is 1.195 g·kg-1, which is slight salinization. The results show that, on the one hand, this research has effectively identified the composition and combination of soil minerals in the study area, and provided reference information of soil mineral composition for future mineral exploration related researches; moreover, the composition and combination of soil minerals are closely related to the geological background and surface climate and environmental conditions of the study area, and the test results of soil salinity indicate that there may be certain risks of soil salinization in the research area. Comprehensive analysis with X-ray diffraction, near infrared spectroscopy and soil salt content test has the advantages of rapidness and simplicity, lower cost, environmental protection, high accuracy and reliability, and provides a scientific technical means and method for soil mineral research.
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