Geochemical composition of natural waters near a storage site of low-activity radioactive wastes

Gaskova, Olga; Boguslavskii, A. E.; Sirotenko, T. G.

doi:10.1134/s0097807811050071

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…The highest U concentration being found in G2 was 67 times higher than the threshold set by GB23727-2009, and was up to 76 times higher than the threshold set by USEPA. Due to the infiltration of oxygen-rich groundwater, partial oxygen pressure of the groundwater increased, leading to an oxidative condition [31], which favored dissolutions of U-bearing minerals contained in historical accumulated tailings sand in aquifers. It was also found that, in sampling site G2 and G3, which were located near the river, U concentrations were much higher as compared to those in the site G1, which was far away from the river.…”

Section: Groundwater Samplesmentioning

confidence: 99%

Occurrence and Distribution of Uranium in a Hydrological Cycle around a Uranium Mill Tailings Pond, Southern China

Gao

Guo

et al. 2020

IJERPH

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Uranium (U) mining activities, which lead to contamination in soils and waters (i.e., leachate from U mill tailings), cause serious environmental problems. However, limited research works have been conducted on U pollution associated with a whole soil-water system. In this study, a total of 110 samples including 96 solid and 14 water samples were collected to investigate the characteristics of U distribution in a natural soil-water system near a U mining tailings pond. Results showed that U concentrations ranged from 0.09 ± 0.02 mg/kg to 2.56 × 104± 23 mg/kg in solid samples, and varied greatly in different locations. For tailings sand samples, the highest U concentration (2.56× 104 ± 23 mg/kg) occurred at the depth of 80 cm underground, whereas, for paddy soil samples, the highest U concentration (5.22 ± 0.04 mg/kg) was found at surface layers. Geo-accumulation index and potential ecological hazard index were calculated to assess the hazard of U in the soils. The calculation results showed that half of the soil sampling sites were moderately polluted. For groundwater samples, U concentrations ranged from 0.55 ± 0.04 mg/L to 3.36 ± 0.02 mg/L with a mean value of 2.36 ± 0.36 mg/L, which was significantly lower than that of percolating waters (ranging from 4.56 ± 0.02 mg/L to 12.05 ± 0.04 mg/L, mean 7.91 ± 0.98 mg/L). The results of this study suggest that the distribution of U concentrations in a soil-water system was closely associated with hydrological cycles and U concentrations decreased with circulation path.

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Section: Groundwater Samplesmentioning

confidence: 99%

Occurrence and Distribution of Uranium in a Hydrological Cycle around a Uranium Mill Tailings Pond, Southern China

Gao

Guo

et al. 2020

IJERPH

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“…Loáiciga 4 made a general review on the relationship of climate change with hydrological and aquifer processes. Gas'kova et al 5 carried out a research on the variation of geochemical compositions of natural water near a storage site of low-activity liquid radioactive wastes. Guardiola-Albert and Jackson 6 investigated the climate change impacts on natural recharge and groundwater-wetland dynamics.…”

Section: Introductionmentioning

confidence: 99%

Variations of Hydrogeochemical Characteristics of Shallow Groundwater Caused by Agricultural Activities

Wu¹,

Li²,

Qian³

2013

Asian J. Chem.

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To investigate the variations of hydrogeochemical parameters of shallow groundwater forced by agricultural irrigation in Nanshantaizi area, 56 water samples were collected in two different periods. The major physio-chemical parameters of samples of the two periods were analyzed and compared spatiotemporally and the groundwater chemistry evolution was also discussed. The study shows that most major ions in 2012 have higher concentrations than those in 2010 and shallow groundwater quality in the study area has deteriorated. All major ions show a sharp increase during the infiltration process of irrigation water because of the dissolution of salts contained in soil media. Along groundwater flow path, two parameter variation patterns can be observed because of different reactions or processes dominated in different sections. Groundwater quality deterioration calls for a change in current irrigation pattern.

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Biological effects of uranium in water, soil and rice in uranium deposits in southern China

Shi

Tang

Yang

et al. 2021

J Radioanal Nucl Chem

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Geochemical composition of natural waters near a storage site of low-activity radioactive wastes

Cited by 6 publications

References 5 publications

Occurrence and Distribution of Uranium in a Hydrological Cycle around a Uranium Mill Tailings Pond, Southern China

Occurrence and Distribution of Uranium in a Hydrological Cycle around a Uranium Mill Tailings Pond, Southern China

Variations of Hydrogeochemical Characteristics of Shallow Groundwater Caused by Agricultural Activities

Biological effects of uranium in water, soil and rice in uranium deposits in southern China

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