Study on the Physical, Chemical and Radioactive Gas—Radon (²²²Rn) Exhalation Properties of Bleached Sandstone in the Northeast Edge of the Ordos Basin

Geological Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

ABSTRACT The northeast margin of Ordos Basin, China has a large area with ‘bleached sandstone’, unique rock characterised by low diagenetic degree and poor cementation degree. Long‐term wind hydraulic erosion have led to significant soil erosion, vegetation degradation ecological carrying capacity in this region, huge amounts sediments being transported the Yellow River. Therefore, it is critical investigate weathering mechanism physicochemical characteristics bleached sandstone. In study, pore structure, elemental composition, mineral composition radon exhalation sandstone were analysed using low‐temperature nitrogen adsorption instrument, inductively coupled plasma mass spectrometer, polarising microscope environmental detector, respectively. Moreover, determine correlation among them. results demonstrated that development significantly higher than original rock, content mesopores size from 2 50 nm highest. These pores found be predominantly slit parallel plate structure. primarily quartz, feldspar, clay minerals muscovite, quartz Quartz feldspar exhibited weathering, broken crystals more impurities. A amount biotite was altered form muscovite. intergranular spaces are filled heterobase, composed minerals. Additionally, formed ring band structure around particle skeleton. Bleached rich P, Ba, Mn, Sr, Zr other elements, Ba showing highest proportion. enriched toxic elements Be, As, Cd, Sb, Hg, Tl 238 U compared indicating latter certain adsorption. Among them, Be enrichment light rare earth deficient heavy earth. δEu δCe exhibit slight deficiency. Although rate low, rock. high porosity micropore can promote exhalation. High enhance generation, which positive rate. research provide reference for management, utilisation region.

Language: Английский

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Pore Structure and Radon Emission Characteristics of Shallow Soil in the Golmud River Basin of the Qinghai‒Tibet Plateau

Physics and Chemistry of the Earth Parts A/B/C, Journal Year: 2025, Volume and Issue: unknown, P. 103911 - 103911

Published: March 1, 2025

Language: Английский

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Progressive failure mechanism of water glass modified recycled rock-filled concrete based on radon monitoring and resistivity monitoring

Engineering Structures, Journal Year: 2025, Volume and Issue: 335, P. 120403 - 120403

Published: April 22, 2025

Language: Английский

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Study on the influence of water content on radon emission from loess

Journal of Environmental Radioactivity, Journal Year: 2024, Volume and Issue: 273, P. 107371 - 107371

Published: Jan. 19, 2024

Language: Английский

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Effect of hygroscopicity of typical powder solid wastes on their radon exhalation characteristics

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 944, P. 173956 - 173956

Published: June 14, 2024

Language: Английский

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Study on the influence of water saturation on radon exhalation rates of rocks

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 946, P. 174192 - 174192

Published: June 22, 2024

Language: Английский

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Radon emission characteristics and pore structure evolution of self-compacting concrete with silica fume-molybdenum tailings under different curing environments

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 110769 - 110769

Published: Sept. 1, 2024

Language: Английский

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Study on influencing factors of radon exhalation from coal measures in the northern margin of Ordos Basin

Process Safety and Environmental Protection, Journal Year: 2023, Volume and Issue: 178, P. 807 - 817

Published: Aug. 23, 2023

Language: Английский

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Study on the radon exhalation rate of phyllite under thermal effects

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

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Effect of temperature on the radon release characteristics of red clay

Journal of Environmental Radioactivity, Journal Year: 2024, Volume and Issue: 280, P. 107565 - 107565

Published: Nov. 1, 2024

Language: Английский

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