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Le mercure dans les cheveux des gens du nord de l'Inde
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ISBN10: 6209552560
ISBN13: 9786209552564
Publisher: Editions Notre Savoir
Published: Jan 19 2026
Pages: 72
Weight: 0.24
Height: 0.17 Width: 6.00 Depth: 9.00
Language: French
ISBN13: 9786209552564
Publisher: Editions Notre Savoir
Published: Jan 19 2026
Pages: 72
Weight: 0.24
Height: 0.17 Width: 6.00 Depth: 9.00
Language: French
Les cheveux humains sont souvent utilisés comme bioindicateur de l'exposition au mercure. Le mercure (Hg) est depuis des siècles un métal utile dans plein d'applications. Malheureusement, cette utilité est contrebalancée par son impact neurotoxicologique sur la santé. L'Agence américaine de protection de l'environnement recommande de garder le niveau de Hg dans les cheveux en dessous de 1,0 g/g. Du coup, une étude a été faite pour voir les niveaux de Hg dans les cheveux des gens qui vivent dans la ceinture du Teraï, au nord de l'Inde. Des échantillons de cheveux ont été pris sur 111 personnes et mis dans des sacs en plastique identifiés, agrafés pour éviter que les mèches bougent. Les échantillons ont été analysés par combustion, amalgamation à l'or et spectrométrie d'absorption atomique (C-GA-AAS). Le niveau moyen de Hg dans les cheveux était de 0,28 g/g pour l'ensemble du groupe, allant de 0,0012 à 1,9091 g/g. Les niveaux moyens de Hg dans les cheveux étaient de 0,16 g/g pour les hommes et de 0,12 g/g pour les femmes, ce qui montre que les hommes avaient des niveaux de Hg dans les cheveux plus élevés que les femmes. 97 % de l'échantillon total avait des concentrations de Hg dans les cheveux inférieures à 1,0 g/g, c'est-à -dire dans la limite de sécurité, tandis que seulement 3 % avaient des concentrations de Hg supérieures à 1,0 g/g, dépassant ainsi la limite de sécurité. Il faut surveiller en permanence les niveaux de Hg dans les cheveux et la santé.
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