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ISSN Print: 2394-7500, ISSN Online: 2394-5869, CODEN: IJARPF

International Journal of Applied Research

Vol. 6, Issue 8, Part B (2020)

Evaluation du profil métallique et biologique de la pollution de l’air atmosphérique dans la ville province de Kinshasa, République Démocratique du Congo

Author(s)
Mondo Mapasi Theo, Pwema Kiamfu Victor, Lusasi Swana Willy, Gizanga Valu René, Nsimanda Ipey camille, Wafula Mifundu et Musibono Eyul’Anki Dieudonné
Abstract
Atmospheric air quality was assessed in Kinshasa from August 2019 to March 2020 by analyzing rainwater and dust in the air to identify mineral and biological pollutants in five sites with high human concentration and motorized traffic (Rond-Point Victoire, Kingasani terminus, Super-Lemba, Limete 7ème Rue, Avenue Nguma and the Bombo-Lumene hunting reserve). Rainwater and dust samples were collected from the roofs of houses and from the leaves of trees over 5 metres high. The concentrations of these pollutants were determined by molecular absorption spectrophotometry. The results obtained showed that the quality of the rainwater collected depends on the particles suspended in the atmosphere. Heavy metals: lead, cadmium and aluminium are present in rainwater in Kinshasa. In descending order of heavy metal concentrations in rainwater per site, we have : Rond-Point Victoire (Al: 43.63±0.75 ppb, Cd: 79.40±0.34 ppb, Pb: 84.88±5.47 ppb) > Kingasani terminus (Al: 44.48±2.5 ppb, Cd: 54.61±0.32 ppb, Pb: 78.93±2.6 ppb) > Limete 7ème Rue (Al: 41.8±2 ppb, Cd: 43.49±2.82 ppb, Pb: 59.11±0.75 ppb) > Super-Lemba (Al: 35.01±4 ppb ; Cd: 40.31±3.74 ppb ; Pb: 49.63±3.3 ppb) > Nguma (Al: 17.13±1.7 ppb, Cd: 14.99±1.32 ppb, Pb: 20.80±1.37 ppb) > Bombo-Lumene (Al: 0.35±0.02 ppb, Cd: 0.42±0.01 ppb, Pb: 0.51±0.01 ppb). For dust, we have : Rond-Point Victoire (Al: 35.7±3.32 ppb, Cd: 69.2±2.69 ppb, Pb: 204.43±4.89 ppb) > Kingasani terminus (Al: 34.08±4.6 ppb, Cd: 66.84±3.63 ppb, Pb: 193.74±4.57 ppb) > Limete 7ème Rue (Al: 23.56±0.51 ppb, Cd: 52.12±6.54 ppb, Pb: 137.45±3.64 ppb) > Super-Lemba (Al: 13,98±0.44 ppb, Cd: 31.96±2.71 ppb, Pb: 96.75±9.81 ppb) > Nguma (Al: 11.23±0.54 ppb, Cd: 46.88±0.85 ppb, Pb: 103.66±6.73 ppb) > Bombo-Lumene (Al: 0.71±0.15 ppb, Cd: 0.32±0.00 ppb, Pb: 1.07±0.1 ppb). The culture of dust in petri dishes revealed 20 plant species belonging to 14 families whose dissemination is through anemochemistry and zoochory, which highlights biological pollution. It is necessary and urgent to develop the monitoring of air quality in Kinshasa.
Pages: 115-123  |  143 Views  5 Downloads
How to cite this article:
Mondo Mapasi Theo, Pwema Kiamfu Victor, Lusasi Swana Willy, Gizanga Valu René, Nsimanda Ipey camille, Wafula Mifundu et Musibono Eyul’Anki Dieudonné. Evaluation du profil métallique et biologique de la pollution de l’air atmosphérique dans la ville province de Kinshasa, République Démocratique du Congo. Int J Appl Res 2020;6(8):115-123.
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