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光谱在土壤元素测定中的应用 被引量:1
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作者 胡忠全 俞宵丽 《中国科技期刊数据库 工业C》 2015年第3期59-60,共2页
土壤是人类赖以生存的自然环境和农业生产的重要资源,随着人类工业发展和活动范围扩大,造成了地球环境恶化,土壤污染日益严重。土壤毫无疑义的被认为是人类活动释放重金属的主要储存库。当土壤中的重金属污染物含量超过其自身的净化能力... 土壤是人类赖以生存的自然环境和农业生产的重要资源,随着人类工业发展和活动范围扩大,造成了地球环境恶化,土壤污染日益严重。土壤毫无疑义的被认为是人类活动释放重金属的主要储存库。当土壤中的重金属污染物含量超过其自身的净化能力时,就会引起土壤质量下降,原子吸收光谱法具有干扰少、测定范围宽、操作简便、分析速度快、灵敏度高等优点,可分析元素达70余种,成为普及程度高的仪器分析技术之一。在我国已广泛用于地质、冶金、化工、食品、环保、生物和医药卫生等各个领域。在农业方面,主要应用于土壤、肥料及植物体中的中微量元素分析、水质分析、土壤重金属环境污染物分析、土壤背景值调查及农业环境评价分析等方面。 展开更多
关键词 光谱分析法 土壤元素测定 中微量元素 测定应用
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土壤环境监测中原子吸收光谱法的应用分析 被引量:3
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作者 覃锦丽 《皮革制作与环保科技》 2023年第4期127-128,137,共3页
为了有效治理土壤环境污染问题,本文以土壤环境监测工作的研究为例,开展了原子吸收光谱法在该项工作中的应用研究,通过分析原子吸收光谱法的原理、主要类型以及优势,进一步探析了原子吸收光谱法在土壤环境监测不同环节的操作和应用,总... 为了有效治理土壤环境污染问题,本文以土壤环境监测工作的研究为例,开展了原子吸收光谱法在该项工作中的应用研究,通过分析原子吸收光谱法的原理、主要类型以及优势,进一步探析了原子吸收光谱法在土壤环境监测不同环节的操作和应用,总结出一些关键内容,以期为相关领域的工作实践提供有益的参考。 展开更多
关键词 原子吸收光谱法 火焰法 土壤元素测定
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Integration of SEM/WDX elemental mapping and micromorphology to determine mineralogical traits of peat soils(case study:Northern Iran) 被引量:1
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作者 Milad Kurdi Taymor Eslamkish 《Acta Geochimica》 EI CAS CSCD 2017年第2期298-315,共18页
We explored the potential use of combining wavelength-dispersive X-ray spectroscopy(WDX) and micromorphology of thin sections to identify minerals in peat soils. Peat soil minerals from three peats and swamps across G... We explored the potential use of combining wavelength-dispersive X-ray spectroscopy(WDX) and micromorphology of thin sections to identify minerals in peat soils. Peat soil minerals from three peats and swamps across Golestan Province in northern Iran were first characterized by micromorphological studies. Soils were composed mainly of quartz, muscovite, biotite, pyroxene,sericitized Fe-nodules, and iron-rich garnet. In addition,micromorphological results indicated that Galougah Coastal Swamp sections contained some inorganic residue with biological origin including oyster and limpet, which may be related to the swamp's location near Gorgan Gulf.In order to determine mineralogical properties of samples,twelve unknown grains were chosen for elemental concentration map studies. Quartz, garnet, ilmenite, calcite,and pyroxene in Suteh samples; epidote and Fe-nodule in Ghaleh-Ghafeh Peat Swamp; and barite, phyllosilicates,and calcite in Galougah were identified by WDX mapping of Si, Al, Fe, Ca, Mg, C, Ba, S, and Ti. Composition of the oysters' body was also analyzed by WDX for Si, Ca, Fe,and C. The results indicated that most of the minerals in all sections likely formed through weathering, inheriting their composition from the parent rock. This research suggests that merging micromorphology and SEM/WDX image techniques can be useful in confirming the presence of mineral particles in soil science. 展开更多
关键词 Elemental mapping MICROMORPHOLOGY Mineralogical characterization Peat and swamp soil SEM/WDX
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Preliminary Study on Element Leaching and Current Soil-Forming Process of Red Soils 被引量:4
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作者 ZHANQI-GUO XUESHI-KUI 《Pedosphere》 SCIE CAS CSCD 1991年第2期117-126,共10页
The leaching characteristics and the element concentration in soil solution of red soils derived from sandstone,granite,Quaternary red clay and basalt have been studied in the Red Earth Ecological Experimental Station... The leaching characteristics and the element concentration in soil solution of red soils derived from sandstone,granite,Quaternary red clay and basalt have been studied in the Red Earth Ecological Experimental Station,Academia Sinica,using 12 lysimeters.Results obtained show that the element leaching process of red soils occurs mainly from January to the beginning of July annually.The elements with higher concentration in leaching solution of red soils are Si,Ca,Na,K,Mg,and N.The desilication and the leaching process of base cations occur simultaneously in the red soils.Using the first order differential equation and measured parameters of Si leaching,the leaching models of Si for red soils derived from different parent materials are constructed.The leaching process of Si is simulated with the models.Both the absolute and relative ages of red soils derived from different parent materials are discussed based on the simulation result.On the basis of element leaching,composition of soil solution and thermodynamics,the current soil-forming process is discussed.According to the phase diagram,the kaolinization is prevailing in the current formation of different red soils. 展开更多
关键词 element leaching LYSIMETER red soils soil-forming process
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