Accumulation rates of natural radionuclides (40K, 210Pb, 226Ra, 238U, and 232Th) in topsoils due to long-term cultivations of water spinach (Ipomoea Aquatica Forssk.) and rice (Oryza Sativa L.) based on model assessments: A case study in Dong Nai province, Vietnam

Nguyen, Van Thang; Huynh, Nguyen Phong Thu; Le, Cong Hao

doi:10.1016/j.jenvman.2020.111001

Cited by 16 publications

(5 citation statements)

References 66 publications

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“…For instance, the cost of recovering 1 kg of U was reported to range between USD 88 and 122 while the market value was quoted as USD 50 per kg [109,110]. Due to these Bangladesh [95], Brazil [37,102], Germany [55,72], Greece [69], India [87,88], New Zealand [78], Saudi Arabia [79,80,82,83], Vietnam [98,103], East African Community (EAC) ( [27,47]), Egypt [48], and Morocco [20].…”

Section: U As a Potential Agricultural Soil Contaminantmentioning

confidence: 99%

“…Figure 5. Box and whisker plots of reported U in P fertilizers from 2003 to 2022 from peerreviewed articles worldwide, irrespective of the type of P fertilizer type and composition.Bangladesh[95], Brazil[37,102], Germany[55,72], Greece[69], India[87,88], New Zealand[78], Saudi Arabia[79,80,82,83], Vietnam[98,103], East African Community (EAC) ([27,47]), Egypt[48], and Morocco[20].…”

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confidence: 99%

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Uranium Dissemination with Phosphate Fertilizers Globally: A Systematic Review with Focus on East Africa

Mwalongo,

Haneklaus,

Lisuma

et al. 2024

Sustainability

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Growing concern has been expressed about uranium (U) accumulation in agricultural soils caused by the long-term application of mineral fertilizers. More than 80% of naturally occurring U transfers from phosphate rock (PR), the raw material used in mineral fertilizer production, to phosphorus (P) fertilizers. These fertilizers are then distributed on agricultural soils, where the U could accumulate over time and become a risk to the environment. The objective of this work was to review the reported content of U in P fertilizers, its potential dispersion in soils, and its uptake by plants in different countries in the world as reported in the literature. The articles for this systematic review were selected from the Scopus database published between 2003 and 2022. The preferred reporting items for systematic reviews and meta-analyses (PRISMA) protocol were used. A total of 54 articles were assessed based on the standard inclusion and exclusion criteria. U concentrations in P fertilizers, agricultural soil dissemination, and plant uptake for available data were obtained and assessed. In order to compare a set of related data from the collected articles, box and whisker plots showing the distribution of U in P fertilizers are presented by region. The results from the reviewed articles show that the U concentrations in P fertilizer were in the range of 0.1–653 mg kg−1. Interestingly, Minjingu P fertilizers from Tanzania, which are used in six East African countries, showed the highest U concentrations (159 to 653 mg kg−1, average 390 mg kg−1). The reported U concentrations for these fertilizers are, in fact, comparable to those of conventional low-grade uranium deposits mined in Namibia and elsewhere. Additionally, approximately 96% of the reviewed articles indicate that fertilized soil has higher U concentrations than non-fertilized soils, hinting at a measurable effect of mineral fertilizer use. The review recommends U extraction during mineral fertilizer production so that potential environmental risks can be reduced and U resources that would otherwise be lost can be recovered and used to substitute conventional U mining elsewhere.

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Section: U As a Potential Agricultural Soil Contaminantmentioning

confidence: 99%

mentioning

confidence: 99%

Uranium Dissemination with Phosphate Fertilizers Globally: A Systematic Review with Focus on East Africa

Mwalongo,

Haneklaus,

Lisuma

et al. 2024

Sustainability

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“…mobilization and transportation of water in vertical directions and at the surface depend on contaminated soil 51 . Irrigation with U-contaminated water has also increased natural uranium in agricultural soil 52,53 .…”

Section: Sources Of Uraniummentioning

confidence: 99%

Uranium Sources, Uptake, Translocation in the soil-plant System and Its Toxicity in Plants and Humans: A Critical Review

et al. 2023

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Uranium(U) is one of the highly toxic heavy metals and radionuclides that has become a major threat to soil health. There are two types of sources of Uranium in the soil system, natural and anthropogenic. Natural sources of uranium include rock systems and volcanic eruptions while anthropogenic sources include mining activities, disposal of radioactive waste, application of phosphate fertilizers, etc. Uranium accumulation impacts germination, early seedling growth, photosynthesis, metabolic and physiological processes of the plants. Through its accumulation in the aerial parts of the plants, Uranium finds its way to the human body, where it has deleterious health impacts. Different studies have identified the various sources of Uranium, explored, and explained the geochemistry of Uranium in soil, assessed the Uranium uptake and toxicity to the plants, and further studied the impact on human health. Most studies focused on two stages, either soil-plant or plant-human system. However, few studies have critically reviewed and summarized the U in the soil-plant-human system. Thus, the review has been designed to focus on the sources, geochemical behaviour, uptake, and translocation, plant toxicity, food chain entry, and finally, impact on human health. The relationship between the bioavailability of Uranium in the soil-plant system with soil properties like pH, Organic matter, and microorganisms have also been included. The study is further intensified by analyzing the accumulation of Uranium in various parts of the plants.

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“…In the agricultural system, plant uptake is the main process responsible for the decrease in 40 K in soils, mainly in the cultivation of citrus (Table S2). The decreasing rate of 40 K from plant uptake is relevant to the fact that K is important in fertilizing the crop and demonstrate the mobile ability of this element in the soil-plant ecosystems [83].…”

Section: Radioelements In Soils and Plantsmentioning

confidence: 99%

Long Term Application of Fertilizers in Eastern Amazon and Effect on Uranium and Thorium Levels in Soils

et al. 2021

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In recent years, the use of fertilizers has increased in the Amazon. Phosphate fertilizers, which are commonly used, can present high concentrations of radioelements. In the present study, the activity concentrations of uranium (U) and thorium (Th) in Oxisols and Ultisols cultivated with citrus (Citrus sinensis (L.) Osbeck), oil palm (Elaeis guineensis Jacq.) and black pepper (Piper nigrum L.), with 26, 10 and 5 years of implantation, respectively, were evaluated. The potential risk of contamination was estimated by the enrichment (EF) and bioaccumulation (BAF) factors. Pearson’s correlation coefficients indicated a significant relationship between the concentrations of U and Th in soil and plant and the soil properties pH, Ca2+, Mg2+, K+ and P. The enrichment (EF < 2) and bioaccumulation (0.01 < BAF < 0.05) factors were low. In plant tissues, the concentrations of 238U followed the order: citrus > black pepper > oil palm, and the concentrations of 232Th followed the sequence: black pepper >> citrus > oil palm. The activity concentrations of 238U and 232Th in the soil cultivated with black pepper, as well as in the soil of the reference area close to the citrus plantation, were higher than the world average values of 35 and 30 Bq kg−1, respectively, established by the United Nations Scientific Committee on Effects of Atomic Radiation. Perennial crops that are fertilized annually must be monitored by environmental agencies due the accumulation of elements that can promote potential risks to human health.

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Accumulation rates of natural radionuclides (40K, 210Pb, 226Ra, 238U, and 232Th) in topsoils due to long-term cultivations of water spinach (Ipomoea Aquatica Forssk.) and rice (Oryza Sativa L.) based on model assessments: A case study in Dong Nai province, Vietnam

Cited by 16 publications

References 66 publications

Uranium Dissemination with Phosphate Fertilizers Globally: A Systematic Review with Focus on East Africa

Uranium Dissemination with Phosphate Fertilizers Globally: A Systematic Review with Focus on East Africa

Uranium Sources, Uptake, Translocation in the soil-plant System and Its Toxicity in Plants and Humans: A Critical Review

Long Term Application of Fertilizers in Eastern Amazon and Effect on Uranium and Thorium Levels in Soils

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