{"id":250,"date":"2021-09-30T17:30:57","date_gmt":"2021-09-30T15:30:57","guid":{"rendered":"https:\/\/acepartnerz.kinsta.cloud\/ramr2d\/?post_type=boursier&p=250"},"modified":"2024-08-06T09:42:49","modified_gmt":"2024-08-06T07:42:49","slug":"tiemoko-tonga-paul","status":"publish","type":"boursier","link":"https:\/\/ace-partner.org\/ramr2d\/boursier\/tiemoko-tonga-paul\/","title":{"rendered":"TIEMOKO Tonga Paul"},"content":{"rendered":"\n

Date de d\u00e9but : 1er<\/sup> novembre 2020
Date pr\u00e9visionnelle de soutenance de th\u00e8se : 31 octobre 2023
Profil ORCID : 0009-0003-8881-0760<\/mark><\/strong><\/p>\n\n\n\n

Intitul\u00e9 du projet :
Etude de la pollution m\u00e9tallique des sites d’orpaillage dans le bassin versant du lac Taabo (C\u00f4te d’Ivoire) et de son impact sur la qualit\u00e9 des ressources en eau.<\/strong><\/p>\n\n\n\n

R\u00e9sum\u00e9 du projet scientifique :<\/strong> La plupart des gisements d’or en Afrique de l’Ouest sont situ\u00e9s dans des contextes g\u00e9ologiques dont les min\u00e9ralisations primaires sont souvent associ\u00e9es \u00e0 des sulfures. Leur exploitation produit des terrils dont le stockage \u00e0 l’air libre peut constituer une source de pollution m\u00e9tallique des milieux r\u00e9cepteurs. Les objectifs de ce projet de recherche sont de pr\u00e9lever et d’analyser les rejets des sites miniers, de d\u00e9terminer les m\u00e9taux toxiques pr\u00e9dominants et d’\u00e9tablir un lien \u00e9ventuel avec la pollution des ressources en eau (s\u00e9diments aquatiques et produits de la p\u00eache) qui seront \u00e9galement pr\u00e9lev\u00e9s et analys\u00e9s. Ce projet devrait permettre \u00e0 terme d’apporter des preuves scientifiques des effets n\u00e9fastes des rejets miniers n\u00e9glig\u00e9s sur les \u00e9cosyst\u00e8mes et sur la sant\u00e9 des populations et de proposer des outils pour r\u00e9soudre le probl\u00e8me de la gestion durable des ressources min\u00e9rales.<\/p>\n\n\n\n

Synth\u00e8se des r\u00e9sultats obtenus<\/strong> : <\/strong><\/p>\n\n\n\n

Cette \u00e9tude a \u00e9t\u00e9 r\u00e9alis\u00e9e sur des sites d’orpaillage dans les r\u00e9gions de Yaour\u00e9, Toumodi et Oum\u00e9-Hir\u00e9 en C\u00f4te d’Ivoire. Son objectif est de d\u00e9terminer les m\u00e9taux toxiques g\u00e9n\u00e9r\u00e9s par ces sites, en vue de pr\u00e9venir une \u00e9ventuelle contamination m\u00e9tallique et\/ou une pollution des ressources en eau de la r\u00e9gion, qui fournissent des produits halieutiques d’eau douce aux populations locales. Pour ce faire, une campagne d’\u00e9chantillonnage a \u00e9t\u00e9 men\u00e9e et 58 \u00e9chantillons composites de d\u00e9chets miniers ont \u00e9t\u00e9 pr\u00e9lev\u00e9s et analys\u00e9s par spectrom\u00e9trie XRF, ICP-MS. Une analyse statistique a \u00e9t\u00e9 r\u00e9alis\u00e9e pour d\u00e9terminer les distributions et les corr\u00e9lations entre ces ETM. Les niveaux de contamination et\/ou de pollution ont \u00e9t\u00e9 d\u00e9termin\u00e9s en calculant divers indices (facteur d’enrichissement, indice de g\u00e9o-accumulation, facteur de concentration et degr\u00e9 de contamination) sur la base des concentrations de r\u00e9f\u00e9rence des ETM dans la cro\u00fbte continentale sup\u00e9rieure. Ces ETM ont \u00e9t\u00e9 trouv\u00e9s en abondance dans l’eau et les s\u00e9diments de la zone d’\u00e9tude. Les sites concern\u00e9s devraient faire l’objet d’une surveillance environnementale afin de pr\u00e9venir les risques \u00e9cologiques potentiels pour les eaux de la r\u00e9gion, et en particulier pour le lac Taabo en aval.<\/p>\n","protected":false},"excerpt":{"rendered":"

Date de d\u00e9but : 1er novembre 2020Date pr\u00e9visionnelle de soutenance de th\u00e8se : 31 octobre 2023Profil ORCID : 0009-0003-8881-0760 Intitul\u00e9 du projet :Etude de la pollution m\u00e9tallique des sites d’orpaillage dans le bassin versant du lac Taabo (C\u00f4te d’Ivoire) et de son impact sur la qualit\u00e9 des ressources en eau. R\u00e9sum\u00e9 du projet scientifique : La […]<\/p>\n","protected":false},"featured_media":251,"menu_order":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"class_list":["post-250","boursier","type-boursier","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nTIEMOKO Tonga Paul - RAMR2D<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ace-partner.org\/ramr2d\/boursier\/tiemoko-tonga-paul\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TIEMOKO Tonga Paul\" \/>\n<meta property=\"og:description\" content=\"Etude de la pollution m\u00e9tallique des sites d\u2019orpaillage dans le bassin versant du lac Taabo (C\u00f4te d\u2019Ivoire) et de son impact sur la qualit\u00e9 des ressources en eau.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ace-partner.org\/ramr2d\/boursier\/tiemoko-tonga-paul\/\" \/>\n<meta property=\"og:site_name\" content=\"RAMR2D\" \/>\n<meta property=\"article:modified_time\" content=\"2024-08-06T07:42:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ace-partner.org\/ramr2d\/wp-content\/uploads\/sites\/3\/2021\/09\/tonga.png\" \/>\n\t<meta property=\"og:image:width\" content=\"178\" \/>\n\t<meta property=\"og:image:height\" content=\"210\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"TIEMOKO Tonga Paul\" \/>\n<meta name=\"twitter:description\" content=\"Etude de la pollution m\u00e9tallique des sites d\u2019orpaillage dans le bassin versant du lac Taabo (C\u00f4te d\u2019Ivoire) et de son impact sur la qualit\u00e9 des ressources en eau.\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ace-partner.org\\\/ramr2d\\\/boursier\\\/tiemoko-tonga-paul\\\/\",\"url\":\"https:\\\/\\\/ace-partner.org\\\/ramr2d\\\/boursier\\\/tiemoko-tonga-paul\\\/\",\"name\":\"TIEMOKO Tonga Paul - 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