Data/hora: 12/06/2024 07:25:35

Provedor de dados: 	5	
País: 	France	
Título: 	Construction and use of a dialysis chamber for investigating in situ the toxicity of heavy metals on bacteria.	
Autores: 	Tan, T.	
Data: 	1984-10	
Ano: 	1984	
Palavras-chave: 	Acinetobacter; Bacteria; Laboratory culture; Tests; Zinc; Dialysis; Toxicity; Heavy metals.	
Resumo: 	Teflon dialysis sampling chambers have been employed to study the toxicity of ZnCl sub(2) on a cadmium-sensitive bacterium, Acinetobacter) CS 13, in an aquarium with running seawater. A concentration of 10 mg Zn super(++) l super(-1) did not influence the cell densities in the chambers, but cell densities decreased at zinc concentrations of 15 and 20 mg l super(-1). In seawater with 20 mg Zn super(++) lu-1 the bacteria accumulated zinc from 827 to 2813 mu g g super(-1) cells dry wt after 1 d. After 2 d the zinc concentration increased to 4625 mu g g super(-1) dry wt. Three chambers were filled with Acinetobacter CS 13 cells added to sterile sediment at a concentration of 1 x 10 super(8) cells ml super(-1) wet sediment. To test the security, these chambers were buried in the sediment of a mud flat in the Weser Estuary and recovered after 7 d. The cultures were not contaminated and cell densities increased to 3 - 4 x 10 super(8) cell ml super(-1).	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/1984/acte-1012.pdf	
Editor: 	Actes de colloques. Ifremer Brest [ACTES COLLOQ. IFREMER.]. 1986	
Relação: 	http://archimer.ifremer.fr/doc/00000/1012/	
Formato: 	application/pdf