TITLE:
Physico-Chemical Quality and Metallic Contamination of the Waters of Lake Bra Kanon (Daloa, West-Central Côte d’Ivoire)
AUTHORS:
Elogne Guessan Zoro, Yao Joseph Adjoumani, Amadou Kouyaté, Sindou Touré, Ali Sanou, Mougo André Tigori, Namory Méité, Brou Dibi
KEYWORDS:
Lake Bra Kanon, Physicochemical Parameters, Nutrient Salts, Heavy Metals, Contamination
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.15 No.12,
December
23,
2025
ABSTRACT: The objective of this study is to determine the physicochemical quality and the level of metal contamination of the waters of Lake Bra Kanon located in Daloa in the center-west of Côte d’Ivoire. Two (02) sampling campaigns were carried out in August 2020 (long dry season) and in December 2020 (short dry season), followed by laboratory analyses. A total of fifteen (15) parameters were analyzed including six (06) physicochemical parameters (Temperature, Hydrogen potential, Electrical conductivity, Dissolved oxygen, Dissolved oxygen saturation rate, Oxidation-reduction potential), four (4) nutrient salts (Nitrate, Nitrite, Phosphate, Ammonium) and five (5) heavy metals (Cadmium, Zinc, Lead, Iron and Manganese). The values obtained from the water samples analyzed were compared to the recommended standards for drinking water in order to assess the potential for using this water resource as a source of drinking water. The comparative analysis showed that most water quality parameters had values consistent with those intended for human consumption. Indeed, twelve (12) parameters (80%) fall within the WHO drinking water standards. However, three (03) parameters, i.e., 20%, including two (02) physicochemical parameters (Temperature and Dissolved Oxygen) on all sites and one (01) metal, namely cadmium, at site S1 only, were deemed inappropriate for water intended for human consumption. These non-compliant values of temperature, dissolved oxygen, and cadmium are a sign of the vulnerability of the lake waters.