Evaluation of Solid Matter in Suspension in Atmospheric Air in the City of Boma, Republic of the Congo

Le résumé fourni par la source

The objective of this study on the evaluation of solid matter suspended in the atmospheric air of the city of Boma, DR Congo, is to identify and quantify the solid atmospheric pollutants that the atmosphere deposits on surface waters. Indeed, this study presents two interests, one on the risk of water pollution in Kalamu and the other on the knowledge of atmospheric pollutants in the environment. After 30 days of exposure, water samples collected from these sensors were analyzed in the laboratory using spectrophotometers and other laboratory equipment and techniques. Gravimetry allowed us to determine the solids concentration. The R software then allowed us to analyze the results to compare them with international regulatory values. The spatio-temporal monitoring of the physicochemical parameters of water from its sensors gives us less satisfactory results on the following sites: site no. 1: 745.244 mg/m2, site no. 2: 561.60 mg/m2, site no. 3: 859.893 mg/m2 and site no. 5: 979.861 mg/m2, taking into account the international standard for the residential environment which is set at 500 mg/m2. Concerning metallic trace elements, the analysis results are also alarming and can be summarized as follows: Aluminum (Al) with a result which varies between 50.12 mg/l to 60.96 mg/l, Lead (Pb) 3.21 mg/l to 41.12 mg/l and Zinc (Zn) 3.02 mg/l to 7.12 mg/l. Indeed, this study is carried out in the rainy season; taking into account the weather conditions of the city of Boma, from one season to another; these results may be different for the dry season; on this, a study is underway on the same objectives during the dry season, in order to correlate the results between the two seasons.

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