Investigation of kaolinite structural order in geophagic soils by infrared spectroscopy: an empirical approach

REFERENCES

• Abrahams, P.W. 2012. Involuntary soil ingestion and geophagia: A source and sink of mineral nutrients and potentially harmful elements to consumers of earth materials. Applied Geochemistry 27: 954–968. doi:10.1016/j.apgeochem.2011.05.003.
   Web of Science ®Google Scholar
• Abrahams, P.W., Davies, T.C., Solomon, A.O., Trow, A.J. & Wragg, J. 2013. Human geophagia, Calabash chalk and Undongo: mineral element nutritional implications. PloS ONE, 8(1): e53304. doi:10.1371/journal.pone0053304.
   PubMed Web of Science ®Google Scholar
• Agene, I.J., Lar, U.A., Mohammed, S.O., Gajere, E.N., Dang, B. & Ogunmola, J.K. 2014. The effects of geophagy on pregnant women in Nigeria. American Journal of Human Ecology 3:1–9. doi:10.11634/216796221403524.
   Google Scholar
• Al-Rmalli, S.W., Jenkins, R.O., Watts, M.J. & Haris, P.I. 2010. Risk of human exposure to arsenic and other toxic elements from geophagy; trace element analysis of baked clay using inductively coupled plasma mass spectrometry. Environmental Health. doi:10.1186/1476-069X-9-79.
   PubMed Web of Science ®Google Scholar
• Aroke, U.O., El-Nafaty, U.A. & Osha, O.A. 2013. Properties and characterization of kaolin clay from Alkaleri, North-Eastern Nigeria. International Journal of Emerging Technology and Advanced Engineering 3: 387–392.
   Google Scholar
• Coulibaly, V., Sei, J., Koffi, L.K., Oyetola, S., Jdid, E.A. & Thomas, F. 2014. Mineralogical and chemical characteristics of clays consumed in the District of Abidjan (Côte D’Ivoire). Material Science and Applications 5: 1048–1059.
   Google Scholar
• Diko, M.L. & Ekosse, G.E. 2012. Physico-chemical and mineralogical considerations of Ediki sandstone-hosted kaolin occurrence, South West Cameroon. International Journal of Physical Science 7: 501–507. doi:10.5897/IJPS11.1506.
   Google Scholar
• Diko, M.L. & Ekosse, G.E. 2014. Soil ingestion and associated health implications: a physicochemical and mineralogical appraisal of geophagic soils from Moko, Cameroon. Studies on Ethno-medicine 8(1): 83–88.
   Google Scholar
• Diko, M.L., Ekosse, G.E. & Ogola, J.S. 2016. Fourier transform infrared spectroscopy and thermal analyses of kaolinitic clays from South Africa and Cameroon. Acta Geodynamica et Geomateriala 13(2): 149–158.
   Web of Science ®Google Scholar
• Ekosse, G.E., Ngole-Jeme, V.M. & Diko, M.L. 2017. Environmental geochemistry of geophagic materials from Free State Province, South Africa. Open Geoscience 9(1): 114–125.
   Web of Science ®Google Scholar
• Gotić, M. & Musić, S. 2007. Mossbauer, FT-IR and FE SEM investigation of iron oxide precipitated from FeSO4 solutions. Journal of Molecular Structures doi:10.1016/j.molstruc.2006.10.059.
   PubMed Web of Science ®Google Scholar
• Helwig, K. 2019. The characterisation of iron earth pigments using infrared spectroscopy. http://www.academia.edu/1006437/11._The_characterisation_of_iron_earth_pigments_using_infrared_spectroscopy (accessed 30 September 2019).
   Google Scholar
• Madejovà, J. 2006. FTIR techniques in clay mineral studies. Vibration Spectroscopy 31:1–10. doi:10.1016/S0924-2031(02)00065-6.
   Google Scholar
• Mahaney, W.C., Hancock, V.G., Aufreiter, S. & Huffman, M.A. 1996. Geochemistry and clay mineralogy of termite mound soil and the role of geophagy in chimpanzees of the Mahale Mountains, Tanzania. Primates 37: 121–134.
   Web of Science ®Google Scholar
• Miranda-Trevino, J. & Coles, C.A. 2003. Kaolinite properties, structure and influence of metal retention on Ph. Applied Clay Science 23: 133–139. doi: 10.1016/S0169-1317(03)00095-4
   Web of Science ®Google Scholar
• Momoh, A., Davies, T.C., Akinsola, H.A., Akinyemi, O., Mhlongo, S., Gitari, W. & Pindihama, G.K. 2013. Human bioaccessibility of Fe, Mn, Zn, and Cu from consumed earth materials in Vhembe District, South Africa. Transactions of the Royal Society of South Africa 68(1): 33–39.
   Google Scholar
• Mukasa-Tebandeke, I.Z., Sebuwufu, P.J.M., Nyanzi, S.A., Schumann, A., Nyakairu, G.W., Ntale, M. & Lugolobi, F. 2015. The elemental, mineralogical, IR, DTA and XRD analyses characterized clays and clay minerals of Central and Eastern Uganda. Advances in Materials Physics and Chemistry 5:67–86
   Google Scholar
• Ngole, V.M. & Ekosse, G.E. 2012. Physico-chemistry, mineralogy, geochemistry and nutrient bioaccessibility of geophagic soils from Eastern Cape, South Africa. Scientific Research and Essays 7: 1319–1331. doi:10.5897/SRE11.1556.
   Google Scholar
• Ngole-Jeme, V.M. & Ekosse, G.E. 2015. A comparative analyses of granulometry, mineral composition and major and trace element concentrations in soils commonly ingested by humans. International Journal of Environmental Research and Public Health 12: 8933-8955. doi:10.3390/ijerph120808933.
   PubMed Web of Science ®Google Scholar
• Odewumi, O.C. 2013. Mineralogy and geochemistry of geophagic clays from Share Area, Northern Bida Sedimentary Basin, Nigeria. Journal of Geology and Geosciences 2: 108. doi.org/10.4172/2329-6755.1000108.
   Google Scholar
• Okunlola, O.A. & Owoyemi, K.A. 2015. Compositional characteristics of geophagic clays in parts of Southern Nigeria. Earth Science Research 4: 1–15. doi:10.5539/esr.v4n2p1.
   Google Scholar
• Palanivel, V. & Velraj, G. 2007. FTIR and FT-Raman spectroscopic studies of fired clay artifacts recently excavated in Tamilnadu, India. Indian Journal of Pure and Applied Physics 45: 501–508.
   Web of Science ®Google Scholar
• Saikia, B. & Parthasarathy, G. 2010. Fourier transform infrared spectroscopic characterization of kaolinite from Assam and Meghalaya, Northeastern India. Journal of Modern Physics 1: 206–210. doi:10.4236/jmp.2010.14031.
   Google Scholar
• Seim, G.L., Ahn, C.I., Bodis, M.S., Luwedde, F., Miller, D.D., Hillier, S., Tako, E., Glahn, R.P. & Young, S.L. 2013. Bioavailability of iron in geophagic earths and clay minerals, and their effect on dietary iron absorption using an in vitro digestion/Caco-2 cell model. Food Function 4: 1263–1270.
   PubMed Web of Science ®Google Scholar
• Siewe, C.N. & Diko, M.L. 2013. Geophagia among female adolescents as a culturally driven practice. Indilinga: African Journal of Indigenous Knowledge Systems 12: 242–251.
   Google Scholar
• Tan, K.H. 1996. Soil Sampling Preparation and Analysis. New York, Marcel Dekker.
   Google Scholar
• Vaculíková, L., Plevová. E., Vallová, S. & Koutník, I. 2011. Characterization and differentiation of kaolinites from selected Czech deposits using infrared spectroscopy and differential thermal analysis. Acta Geodynamica et Geomateriala 8: 59–67.
   Web of Science ®Google Scholar
• Young, S.L., Wilson, M.J., Hillier, S., Delbos, E., Ali, S.M. & Stoltzfus, R.J. 2010. Differences and commonalities in physical, chemical and mineralogical properties of Zanzibar geophagic soils. Journal of Chemical Ecology 36:129–140.
   PubMed Web of Science ®Google Scholar