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Diagnosis of Lead Pollution of Surface Waters of a River: Case of the Djiri River in the Republic of Congo

Roch Corneille Ngoubou, Jean Bienvenu Dinga, Dominique Nganga
Environment and Pollution , Volume 10; doi:10.5539/ep.v10n1p30

Abstract: This research work deals with the physico-chemical analysis of the surface water of the Djiri river with the aim of preventing the population against possible water pollution. The analysis of the samples collected in the Djiri river revealed the presence of lead in these waters at levels exceeding the WHO guideline values: an average annual pollution (0.93 mg / l) which is visibly above the WHO guideline value (0.01mg / l). The in situ data of the Djiri river revealed a significant drop in flow between the period 2016 characterized by a divergence index of 0.82344 thus highlighting a hydrological situation for which the actors of national hydrology will absolutely have to implement measures. Remedial mechanisms to protect this river against possible disappearance.
Keywords: hydrology / surface water / pollution / WHO guideline / guideline values / river revealed / Djiri river

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