Observation of changes in urinary excretion of thorium in humans following ingestion of a therapeutic soil

Höllriegl, Vera; Greiter, Matthias; Giussani, A.; Gerstmann, Udo; Michalke, Bernhard; Roth, P.; Oeh, U.

doi:10.1016/j.jenvrad.2007.02.006

Cited by 29 publications

(5 citation statements)

References 12 publications

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“…A reference value of 1.7 Bq was indicated. The incomplete estimate of the annual intake value of thorium for the inhabitants of Bisichi (24.7 Bq) is therefore a factor of 15 higher than the reference, but, on a daily base, lower than the amount ingested by people consuming therapeutic soils (healing earths) for curing specific disorders (Hö llriegl et al, 2007).…”

Section: Concentrations In Water and Foodstuffs And Daily Intake Of 2mentioning

confidence: 86%

Uranium and thorium in soils, mineral sands, water and food samples in a tin mining area in Nigeria with elevated activity

Arogunjo

Höllriegl

Giussani

et al. 2009

Journal of Environmental Radioactivity

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102

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Section: Concentrations In Water and Foodstuffs And Daily Intake Of 2mentioning

confidence: 86%

Uranium and thorium in soils, mineral sands, water and food samples in a tin mining area in Nigeria with elevated activity

Arogunjo

Höllriegl

Giussani

et al. 2009

Journal of Environmental Radioactivity

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102

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“…The production of dangerous rays like alpha, beta, and gamma from the breakdown of atomic nuclei in radioactive materials like thorium and uranium can seriously affect both living things and the environment. Radioactive contamination has the potential to harm genetic material, impair immunological function, hasten the progression of cancer, and possibly result in fatalities [13]. The RSM (Response Surface Methodology) is a technique that utilizes statistical and mathematical modeling to evaluate the correlation between diverse observations obtained from different factors.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Uranium (VI) on organic cation-moded kula volcanite and optimization with surface response method (RSM)

KAYNAR

2023

Süleyman Demirel Üniversitesi Fen Edebiyat Fakültesi Fen Dergisi

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First of all, the structural characteristics of the prepared HDTMA-volcanite. such as XRF, SEM and BET surface area were examined, then uranium U(VI) adsorption from aqueous solutions was optimized by surface response method (RSM), which is widely used in industrial research. . Effective experimental conditions on adsorption efficiency: pH (3-8), time (30-150 minutes), uranium concentration (20-80 mg/L) and temperature (20-60 °C) were selected. The best possible combinations of these parameters were obtained by the surface response method (RSM). The central composite design (CCD) was chosen for the design of the experimental conditions. According to the RSM results, it was determined that the experimental design fit the quadratic model, and the R2 and R2adj values, which are the parameters showing the model fit, were 0.98 and 0.95, respectively. HDTMA-Volk at optimum conditions. Adsorption capacity was obtained as 4.41 mg/g for the HDTMA-Volcanics at optimum conditions. The compatibility of the obtained data with adsorption isotherms was investigated, and thermodynamic parameters were calculated.

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“…The consumption of clayey materials occurs in almost all the continents in the world including North America [32], Central America [36], South America [1], Asia [2], Europe [35] and Africa [64,23,3,44]. The practice of consuming geophagic clayey materials is very common in many African countries including Cameroon, where several localities abound in edible geophagic clayey materials.…”

Section: Introductionmentioning

confidence: 99%

Geophagic Clayey Materials of Sabga Locality (North West Cameroon): Genesis and Medical Interest

Kalguem¹,

Wouatong²,

Njopwouo³

et al. 2019

EARTH

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Geophagia, the deliberate ingestion of clayey materials, is a complex eating behaviour with obscure etiology and numerous health/medical problems. Geological, mineralogical and geochemical studies were carried out on Sabga geophagic clayey materials located within a trachyte Bamenda mountain, about 16 km east of Bamenda town (North West Cameroon), in order to define the genesis, and its medical interest. Four (04) samples were characterized by different techniques: description of outcrops and pits, particle size distribution by laser dispersion, X-ray diffraction, Fourier transform infrared spectrometry, Scanning electron microscopy and bulk chemical analyses. The main clay minerals were smectite (49-60%) and kaolinite (4-6%). The other major minerals are quartz (19-34%), feldspar (6-12%), goethite (3-6%), and hematite (1-3%). The average particle diameter varied from 2 to 9 µm. Results from the different analytical techniques point out a meteoric weathering of feldspar as petrogenetic origin of geophagic clayey materials. Smectite and kaolinite, which are the main desirable minerals components of the geophagic clayey materials, were geochemically derived from surrounding trachytes. However the presence of crystalline silica (quartz) up to 2% limits the application of some Sabga geophagic clayey materials for pharmaceutical clays. The high radioactive (Th, U), carcinogenic (Cr, Cu, Pb, Ni) and teratogenic (or birth defects) (Cu, Zn, Pb) elements contents in some Sabga geophagic clayey materials implied some pretreatment.

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Observation of changes in urinary excretion of thorium in humans following ingestion of a therapeutic soil

Cited by 29 publications

References 12 publications

Uranium and thorium in soils, mineral sands, water and food samples in a tin mining area in Nigeria with elevated activity

Uranium and thorium in soils, mineral sands, water and food samples in a tin mining area in Nigeria with elevated activity

Adsorption of Uranium (VI) on organic cation-moded kula volcanite and optimization with surface response method (RSM)

Geophagic Clayey Materials of Sabga Locality (North West Cameroon): Genesis and Medical Interest

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