Articles with "metal elements" as a keyword



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Estimation of metal elements content in soil using x-ray fluorescence based on multilayer perceptron

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Published in 2022 at "Environmental Monitoring and Assessment"

DOI: 10.1007/s10661-022-09750-x

Abstract: X-ray fluorescence (XRF) is widely used to rapidly detect heavy metals in soil. Spectra processing has been an important research topic to improve accuracy. In this study, 80 soil samples were analyzed by XRF under… read more here.

Keywords: ray fluorescence; soil; multilayer perceptron; metal elements ... See more keywords
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Thermodynamic analysis and reaction behaviors of alkali metal elements during iron ore sintering

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Published in 2019 at "Journal of Iron and Steel Research International"

DOI: 10.1007/s42243-018-0077-4

Abstract: Reaction thermodynamics and behaviors of alkali metal compounds were studied by FactSage7.1 and sinter pot trials. Main transformation behavior of alkali metal compounds was divided into three parts: part of alkali metal chloride was gasified… read more here.

Keywords: metal elements; alkali metal; flue gas; metal ... See more keywords
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Anchoring transition metal elements on graphene-like ZnO monolayer by CO molecule to obtain spin gapless semiconductor

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Published in 2017 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2017.04.169

Abstract: Abstract Graphene-like zinc oxide monolayer (g-ZnO) is a newfound two-dimensional material. Here we utilize the transition metal (TM) elements (Cr, Mn, Fe, Co, Ni, and Cu) to functionalize the g-ZnO with the aim of designing… read more here.

Keywords: molecule; metal elements; spin gapless; transition metal ... See more keywords
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Effects of meteorological conditions and topography on the bioaccumulation of PAHs and metal elements by native lichen (Xanthoria parietina).

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Published in 2021 at "Journal of environmental sciences"

DOI: 10.1016/j.jes.2021.03.045

Abstract: The bioaccumulation of PAHs and metal elements in the indigenous lichens Xanthoria parietina was monitored during two years at a quarterly frequency, in 3 sites of contrasted anthropic influence. The impact of the meteorological factors… read more here.

Keywords: topography; bioaccumulation; bioaccumulation pahs; pahs metal ... See more keywords
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Exposure risk assessment of nine metal elements in Chongqing hotpot seasoning

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Published in 2020 at "RSC Advances"

DOI: 10.1039/c9ra10028h

Abstract: Atomic absorption spectrometry (AAS) and atomic fluorescence spectrometry (AFS) were used to analyze the contents of nine metal elements (Pb, As, Hg, Cd, Cr, Fe, Mn, Cu, Zn) in 100 groups of Chongqing hotpot seasoning… read more here.

Keywords: nine metal; chongqing hotpot; risk; metal elements ... See more keywords
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Simultaneous Determination of Cr, As, Se, and Other Trace Metal Elements in Seawater by ICP-MS with Hybrid Simultaneous Preconcentration Combining Iron Hydroxide Coprecipitation and Solid Phase Extraction Using Chelating Resin

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Published in 2018 at "International Journal of Analytical Chemistry"

DOI: 10.1155/2018/9457095

Abstract: In the present study, ICP-MS with a new hybrid simultaneous preconcentration combining solid phase extraction using chelating resin and iron hydroxide coprecipitation in one batch at a single pH adjustment (pH 6.0) were developed for… read more here.

Keywords: metal elements; trace metal; determination; hybrid simultaneous ... See more keywords
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Distribution characteristics and source analysis of metal elements in indoor PM2.5 in high-rise buildings during heating season in Northeast China

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Published in 2019 at "Indoor and Built Environment"

DOI: 10.1177/1420326x19875495

Abstract: This study aims to investigate whether sources of metal elements in fine particulate matter and their distribution in high-rise buildings vary with floor levels. Inductively coupled plasma emission spectrometry (ICP-AES) was used to determine the… read more here.

Keywords: rise buildings; analysis; high rise; northeast china ... See more keywords
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The effect of methods of surface treatment of metal elements on their surface free energy, with a view to the formation of polymer-metal hybrid elements

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Published in 2020 at "Polimery"

DOI: 10.14314/polimery.2020.11.9

Abstract: An analysis was made of methods of chemical surface treatment of metal elements made of DC04 steel and Al6061 alloy, for the formation of polymer–metal joints in injection molding technology. The surface characterization included determination… read more here.

Keywords: surface treatment; metal elements; surface; treatment metal ... See more keywords
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Research on Migration Law of Mn in Mudstone Floor in the Goaf under Coupling Conditions of Seepage and Stress

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Published in 2019 at "Polish Journal of Environmental Studies"

DOI: 10.15244/pjoes/99907

Abstract: In recent years, as one of the green coal mining technologies, coal gangue filling and coal mining technology has been widely used. The coal gangue filling body in goaf may be in an acidic or… read more here.

Keywords: heavy metal; coal; metal elements; coal gangue ... See more keywords
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Distribution of heavy metal elements in chromium (III), lead-doped cement pastes

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Published in 2019 at "Advances in Cement Research"

DOI: 10.1680/jadcr.17.00114

Abstract: The distribution of heavy metal elements in cement pastes doped with nitrate salts of chromium (III) and lead were investigated by X-ray powder diffraction and field emission scanning electron micr... read more here.

Keywords: heavy metal; chromium iii; distribution heavy; iii lead ... See more keywords
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Dynamic Changes and Characterization of the Metal Ions in the Silk Glands and Silk Fibers of Silkworm

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Published in 2023 at "International Journal of Molecular Sciences"

DOI: 10.3390/ijms24076556

Abstract: Metal ions are involved in the conformational transition of silk fibroin and influence the structure and mechanical properties of silk fibers. However, the dynamic characteristics of metal ions during the formation of silk fibers remain… read more here.

Keywords: metal ions; silk glands; silk; silk fibers ... See more keywords