STUDY OF SOME HEAVY METALS AND DISSOLVED IONS OF DRINKING WATER IN MUNICIPALITY OF THE SECOND DISTRICT OF N'DJAMENA | ||||
| Journal of Environmental Science | ||||
| Article 9, Volume 50, Issue 9, September 2021, Page 377-399 PDF (854.78 K) | ||||
| Document Type: Review Article | ||||
| DOI: 10.21608/jes.2021.203412 | ||||
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| Authors | ||||
| Gamar M. Gamar1; Mohagir A. Mohager2 | ||||
| 1Department of Life and Earth sciences, Higher Teachers' Training School of N’Djamena. P.BOX: 460. N’Djamena- Chad | ||||
| 2Department of Chemistry, College of Pure and Applied Sciences, University of N’Djamena, P.BOX: 1027, N’Djamena -Chad. | ||||
| Abstract | ||||
| Water samples were collected before treatment (directly from the artesian well) the Chadian Water Company (STE): [GD7, GD8. GD16]. The some Heavy metals and Dissolved ions of these samples were determined in the laboratory of the Ministry of Rural and Urban Waters, according to the approved standard methods. The results of the analyzes for various properties were compared with the permissible values and limits of the WHO, EU, and some health and environmental bodies and institutions .the reading of the samples before treatment for the studied elements are the more than in the samples after treatment. The Water samples before and after treatment for the sites gave a very large variation in the confidence level of residual chlorine ion (8.89.10-6 ***) Wihle Ishowed ) NO3-,NO2-,Cd+2,Cu+2(respectively (0.00374**, 0.00138**,0.00725**,0.00434** (the two sites (GD8 and GD16) recorded heights average chlorine (0.95 mg/l) it exceeds the permissible limit of WHO. As for nitrate the average of the samples before treatment for )41.67mg/l) it exceeds the limit of the USEPA for nitrate in drinking water (10 mg/l). the Water samples before and after treatment for the three sites of Cadmium ratios it was all within permissible limits. The heights mean of Copper was recorded in the drinking water samples before treatment in the two sites (GD7 and GD8) (2.12 mg / l) it exceeds the permissible limits of the SEPA (0.01 – 1.00 mg / l). | ||||
| Keywords | ||||
| Keywords: Dissolved ions; Chlorine Nitrate; Nitrite; Copper; Cadmium; Ndjamena | ||||
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