Geophagic clays in Lubumbashi, DR Congo - Physicochemical and mineralogical profiles of geophagic clays used by pregnant women in Lubumbashi

Geophagy, a form of pica, is the consumption of clay soil, particularly prevalent among pregnant women in Lubumbashi. A study of 450 women revealed a prevalence of 68%, with the majority consuming kaolin (81%) from various regions.Organoleptic analysis highlighted distinctive characteristics of the soils consumed, while physical and chemical tests revealed the presence of chemical elements such as SiO2, Al2O , Fe2O , TiO2 and K2O, as well as heavy metals (As, Cd, Pb, Ni) and uranium-bearing substances. The cation exchange capacity ranged from 21.4 to 31.0 meq/100 g, and the soils were acidic according to their pH.This study highlights the prevalence of geophagy in Lubumbashi, regardless of social conditions. It opens up prospects for the development of decontamination methods so that these clays can be used in pharmaceuticals without posing a health risk.

Info autore

PharmD, Especialista em Controle de Qualidade e Garantia de Qualidade de Medicamentos, Alimentos, Cosméticos e Produtos de Saúde.

Dettagli sul prodotto

• Autori: BOKANYA IMPELE Alex, KALONJI NDOUMBA Jean-Baptiste, DUEZ Pierre
• Editore: Our Knowledge Publishing
• Lingue: Inglese
• Formato: Tascabile
• Pubblicazione: 24.06.2025
• EAN: 9786208996574
• ISBN: 9786208996574
• Pagine: 124
• Categoria: Scienze naturali, medicina, informatica, tecnica > Chimica > Chimica fisica