Data/hora: 23/09/2024 00:31:22

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	20/10/2000	
Data da última atualização: 	31/03/2017	
Autoria: 	HYLANDER, L. D.; SILVA, E. C.; OLIVEIRA, L. J.; SILVA, S. A.; KUNTZE, E. K.; SILVA D. X.	
Título: 	Mercury levels in Alto Pantanal: a screening study.	
Ano de publicação: 	1994	
Fonte/Imprenta: 	Ambio, v.23, n.8, p.478-484, Dec. 1994.	
Idioma: 	Inglês	
Conteúdo: 	Mercury (Hg) levels in soil, sediment, fish and bird feathers from nine sites in the Alto paraguay River Basin were determined with a hydrige-generator coupled to an AAS. Large quantities of Hg, used in goldmining, are dospersed directly into the air the rivers running into Pantanal. The Pantanal ecosystem is of importance not only to the people who live, fish, and raise cattle here, but also to citizens in faraway cities, who eat fish from the region or benefit from the economic surplus generated by foreign tourosts to pantanal. Local, commercially important, catfish (Pseudo-platystoma coruscans) had a Hg content above the limit for human consumption (0.5 ppm w.w.) and significantly above the natural background level. Mercury content in bird feathers also indicated biomagnification. No stastically accumulation of Hg was found in soil and sediment samples. Evidently, Hg originating in the amalgamation process has a higher bioavailability than Hg naturally present in soil minerals. Techniques for recycling the Hg used in gold mining have not succeeded in decreasing the dispersion of Hg. Restrictions on the international trade of Hg would probably reduce Hg pollution significantly.	
Palavras-Chave: 	Alto Pantanal; Estudo; Study.	
Thesagro: 	Mercúrio.	
Thesaurus Nal: 	mercury.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (46362-1) - ADD - SP - PP - SP16188 -  - 16188 - DIS