Natural radioactive risk assessment in top soil and possible health effect in Minim and Martap villages, Cameroon: using radioactive risk index and statistical analysis

Nyamsari, Daniel G.; Yalçın, Fusun; Mboh, M. T.; Alfred, F. G.; Yalçın, Mustafa Gürhan

doi:10.3139/124.110927

Cited by 6 publications

(6 citation statements)

References 23 publications

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“…However, the samples of B42 and B51 were identified as high-iron bauxite. Normalized spider diagrams can be used to determine whether the elements are enriched or impoverished in bauxite [26], [55]. The Upper Continental Crust (UCC)-normalized trace element pattern of ferritic bauxite and kaolinitic bauxite shows depletion in Ti, Sr, Ba, and Rb and enrichment in Hf, Ce, and K. In bauxite samples, ferritic bauxite and kaolinitic bauxite are similar to each other except for their Ti values.…”

Section: Laterization and Classification Of Bauxitesmentioning

confidence: 99%

Geochemical characterization of the Sutlegen bauxite deposit, SW Antalya

Atakoglu¹,

Yalçın²

2021

Min. miner. depos.

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Purpose.The purpose is to determine geological and geochemical characteristics of the Sutlegen (Antalya, Turkey) bauxites, to identify the elements that played a major role in their formation. Methods. X-ray diffraction (XRD) mineral phase analysis, X-ray fluorescence (XRF) elemental analysis, plasma-mass spectrometry (ICP-MS), the petrographic and mineralogical analyses, and multivariate statistical methods were used. Findings. The major element content of the ore was determined as Al2O3 (60-35.2 wt%), SiO2 (39.5-0.2 wt%), Fe2O3 (48.4-19.5 wt%), TiO2 (36.9-16 wt%), and P2O5 (0.5-0.1 wt%). The Sutlegen region, which shows epirogenetic action with the uplift of the earth's crust, is generally rich in neritic carbonates. It was revealed that the bauxite ores have undergone moderate and strong laterization as a result of the deferruginization in the environment, and they were classified into four groups as lateritic, ferritic, kaolinitic, and bauxite. The increase in the aluminosilicate minerals, which were formed during the formation of bauxite in the environment was found to be directly proportional to the laterization processes. In this context, it was considered that the lateritic material that was firstly formed in the environment filled the cavities and pores of the karst-type limestones and sedimentary units in the region by superficial transfer phenomena. The bivariate diagrams of Log Cr vs. Log Ni revealed that the bauxite that formed in the region had an ultrabasic source. Originality. In literature, no scientific studies have been found on bauxite mineralization in the Sutlegen deposits that have been operated for a long period. Practical implications. In this context, the geochemical characteristics of bauxites revealed that the source of the laterization process in the region was the ultrabasic igneous rocks. The lateritic material moved by superficial transfer was accumulated on sandstone, claystone, siltstone, and limestone and in karstic cavities; then, it formed karstic bauxite (kaolinitic and bauxite) of different classifications due to the effect of metamorphism.

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Section: Laterization and Classification Of Bauxitesmentioning

confidence: 99%

Geochemical characterization of the Sutlegen bauxite deposit, SW Antalya

Atakoglu¹,

Yalçın²

2021

Min. miner. depos.

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“…Statistical analysis and multivariate statistical methods were used to reveal the correlation between the variables of marble and their effect on the distribution of natural radionuclides [6,16,23,28,[34][35][36][37][38][39][40][41][42][43][44][45][46][47]. Firstly, descriptive statistics were determined and then multivariate statistical analyses, such as correlation, factor, cluster, and regression analysis, were performed.…”

Section: Multivariate Statisticsmentioning

confidence: 99%

“…A correlation analysis was performed to reveal the relationship between radionuclides, radiological parameters, and chemical concentrations. Kolmogorov-Smirnov and Shapiro-Wilk normal tests are performed for the statistical analysis of data obtained in different ways [10,16,49]. The normality of the data was tested performing Kolmogorov-Smirnov and Shapiro-Wilk tests (Table S2).…”

Section: Correlation Analysismentioning

confidence: 99%

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Investigation of the Effect of Hydrothermal Waters on Radionuclide Activity Concentrations in Natural Marble with Multivariate Statistical Analysis

et al. 2020

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The study aims to investigate the effects of Burdur (Turkey) marble on human health by interpreting their radioactivity concentration (226Ra, 232Th, and 40K), radiological hazard parameters, chemical concentration, physical properties, and all data related to these features by using multivariate statistical methods. Chemical and radionuclide analyses were performed on marble samples. The data were interpreted by statistical analysis. According to the regression model, an increase in the concentration of vanadium carried to the environment by hydrothermal waters causes a 4.452-fold higher concentration of 226Ra. The R2 value of the model was 0.64 and it was statistically significant. The maximum concentration of 226Ra in Isparta Davraz Beige sample (M7) exceeded the values of some countries’ standards. Except for M7, the analyzed sorts of marble can be used safely in dwellings and public buildings.

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“…In bauxite formation processes, the rare earth element (REE) concentrations, as well as the characteristics of the environment, vary due to chemical alteration processes (Maksimovic & Panto, 1991;Yalcin & Temur, 2006;Yalcin & Ilhan, 2008;Kansun et al, 2010;Nyamsari & Yalcin, 2017;Nyamsari et al, 2019;2020;Sidibe & Yalcin, 2019;Yalcin et al, 2012;2016a). Rare earth elements are studied under two groups: light rare earth elements (LREEs) and heavy rare earth elements (HREEs).…”

Section: Introductionmentioning

confidence: 99%

Explanation of the Sutlegen Bauxites to Some REE Contents by Statistical Approach and Inequality Expressions

Atakoglu¹,

Yalçın²

2021

Gazi University Journal of Science Part A: Engineering and Innovation

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Bauxite Statistical Analysis Inequalities Expression Chemical PropertyBauxite formation is usually possible in humid and tropical weather conditions with the enrichment of minerals containing Al2O3 in the environment. These minerals are found in chemical compositions that are rich in major and trace elements, and REEs. Karst-type bauxites have different characteristics in terms of REE and trace elements since they undergo alteration processes. Various correlations can be evaluated using geostatistical methods to reveal the behavior of these elements in bauxitization processes. The REE contents of the Sutlegen bauxite deposits were obtained by conducting ICP-MS analysis. The inequality expressions of the La element, which is in the lanthanide group of the periodic table and is included in the light rare earth elements, with Y element, the heavy and transition metal, has provided information about the formation conditions of bauxite. The arithmetic mean of the La/Y ratios of bauxites was found to be 0.25, and the ore formation condition was interpreted as acidic. Therefore, ∑REE concentrations of the Sutlegen bauxite deposits were associated with ∑LREE/HREE and La/Y ratios. ∑REE concentration was found to be positively correlated with the ∑LREE/HREE and La/Y ratios, and the correlation coefficients were found to be 0.89 and 0.44, respectively. The positive correlation between ∑REE concentration and La/Y ratio can be interpreted that the pH in the bauxite formation environment has a positive effect on REEs. Under the acidic conditions of ore formation, the bauxites were enriched in REEs.

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Natural radioactive risk assessment in top soil and possible health effect in Minim and Martap villages, Cameroon: using radioactive risk index and statistical analysis

Cited by 6 publications

References 23 publications

Geochemical characterization of the Sutlegen bauxite deposit, SW Antalya

Geochemical characterization of the Sutlegen bauxite deposit, SW Antalya

Investigation of the Effect of Hydrothermal Waters on Radionuclide Activity Concentrations in Natural Marble with Multivariate Statistical Analysis

Explanation of the Sutlegen Bauxites to Some REE Contents by Statistical Approach and Inequality Expressions

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