摘要
A systematic study was carried out to assess the level of contamination with fluorides and heavy metals in the drinking water of the city of Daloa as well as the risks to the health of consumers. The waters of 11.11% of the sites sampled exceeded the fluoride limit for drinking water with a contamination index (CI) greater than 0. All the waters recorded concentrations of cadmium (Cd), copper (Cu), iron (Fe), manganese (Mn) and lead (Pb) above the recommended values with CI > 0. However, 22.22% of the sites recorded concentrations below the standard for zinc (Zn) with IC < 0. The assessment of adverse effects on human health showed that the chronic daily intake (CDI) of fluorine and metals was less than 1 (CDI < 1) for both adults and children except for Zn where the CDI > 1 for children in 22.22% of drinking water studied. HQs have an average of less than 1 for fluorine and greater than 1 for all metals. Moreover, the danger indices have values greater than 1. The incremental lifetime cancer risk (ILCR) and the total ILCR are above the recommended values. These results showed that the drinking water sampled is of poor quality due to higher levels of heavy metals, which can constitute a danger to human health. Long-term use of one of these poor quality waters can lead to cancer in consumers. It is therefore necessary to treat this water in order to eliminate the metals before using it for drinking. This study can help decision-makers and competent authorities in charge of water management.
A systematic study was carried out to assess the level of contamination with fluorides and heavy metals in the drinking water of the city of Daloa as well as the risks to the health of consumers. The waters of 11.11% of the sites sampled exceeded the fluoride limit for drinking water with a contamination index (CI) greater than 0. All the waters recorded concentrations of cadmium (Cd), copper (Cu), iron (Fe), manganese (Mn) and lead (Pb) above the recommended values with CI > 0. However, 22.22% of the sites recorded concentrations below the standard for zinc (Zn) with IC < 0. The assessment of adverse effects on human health showed that the chronic daily intake (CDI) of fluorine and metals was less than 1 (CDI < 1) for both adults and children except for Zn where the CDI > 1 for children in 22.22% of drinking water studied. HQs have an average of less than 1 for fluorine and greater than 1 for all metals. Moreover, the danger indices have values greater than 1. The incremental lifetime cancer risk (ILCR) and the total ILCR are above the recommended values. These results showed that the drinking water sampled is of poor quality due to higher levels of heavy metals, which can constitute a danger to human health. Long-term use of one of these poor quality waters can lead to cancer in consumers. It is therefore necessary to treat this water in order to eliminate the metals before using it for drinking. This study can help decision-makers and competent authorities in charge of water management.
作者
Ali Sanou
Namory Méité
Amadou Kouyaté
Elisephane Irankunda
Alfred Niamien Kouamé
Aka Eric Koffi
Koffi Jean-Paul Bohoussou
Lébé Prisca M.-S. Kouakou
Ali Sanou;Namory Méité;Amadou Kouyaté;Elisephane Irankunda;Alfred Niamien Kouamé;Aka Eric Koffi;Koffi Jean-Paul Bohoussou;Lébé Prisca M.-S. Kouakou(Institut National Polytechnique Félix Houphouët-Boigny (INP-HB), Laboratoire des Procédés Industriels de Synthèses, de l’Environnement et des Energies Nouvelles (LAPISEN), Yamoussoukro, Côte d’Ivoire;Institut National Polytechnique Félix Houphouët-Boigny (INP-HB), Laboratoire de Thermodynamique, Traitement et Sciences des Surfaces et Interfaces, Ingénierie et Physicochimie des Procédés et de Mécanique des Matériaux (L2-TSIPM), Yamoussoukro, Côte d’Ivoire;Ecole Normale Supérieure (ENS), Laboratoire des Sciences Physiques Fondamentales et Appliquées (LSPFA), Abidjan, Côte d’Ivoire;Université Félix Houphouët-Boigny (UFHB), UFR SSMT, Laboratoire de Constitution et Réaction de la Matière (LCRM), Abidjan, Côte d’Ivoire;Université Félix Houphouët-Boigny (UFHB), UFR SSMT, Laboratoire de Constitution et Réaction de la Matière (LCRM), Abidjan, Côte d’Ivoire;Laboratoire des Sciences et Technologies de l’Environnement, UFR Environnement, Université Jean Lorougnon Guédé, Daloa, Côte d’Ivoire;School of Computer Science and Information Technology, The East African University, Kajiado, Kenya)
