Laboratoire des Sciences et Techniques de l’Eau et de l’Environnement, UFR STRM, Université Félix Houphouët-Boigny de Cocody, 22 BP 582 Abidjan 22, Côte d'Ivoire
The most of groundwater in Katiola area present high relatively proportions of iron. Previous works indicate that over 67% of collected water have iron proportions above the WHO guideline value which is 0.3 mg L-1. If iron and manganese do not pose serious health risks, their presence may indicate that groundwater is of poor quality and may be indicative of an existence of other problems that could cause adverse health effects. Therefore, this study aims to determine the origin of iron in groundwater of the area study and give answers to high iron contents. To achieve this goal, we applied multivariate analysis (CNPA and CAH) on the results of physico chemical analysis and overlay maps of iron distribution with geological map. The results of the ACPN indicate that; solubility of iron and manganese increases in anoxic conditions. The overlay map of iron concentration distribution of with geological map shows that, high iron levels are found in greater proportion in the biotite’s granites; suggesting their origin related to the geology of the area study.
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