Determination of metal ions in natural waters by flame-AAS after preconcentration on a 5-amino-1,3,4-thiadiazole-2-thiol modified silica gel.
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Data
1999-01-01
Autores
Padilha, P. D.
Gomes, LAD
Padilha, CCF
Moreira, J. C.
Dias, N. L.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Marcel Dekker Inc
Resumo
5-amino-1,3,4-thiadiazole-2-thiol groups attached on a silica gel surface have been used for adsorption of Cd(II), Co(II), Cu(II), Fe(III), Ni(II), Pb(II) and Zn(II) from aqueous solutions. The adsorption capacities for each metal ion were (in mmol.g(-1)): Cd(II)= 0.35, Co(II)= 0.10, Cu(II)= 0.15, Fe(III)= 0.20, Hg(Il)= 0.46, Ni(II)= 0.16, Pb(II)= 0.13 and Zn(II)= 0.15. The modified silica gel was applied in the preconcentration and quantification of trace level metal ions present in water samples (river, and bog water).
Descrição
Palavras-chave
preconcentration, 5-amino-1,3,4-thiadiazole-2-thiol modified silica gel, water analysis
Como citar
Analytical Letters. New York: Marcel Dekker Inc., v. 32, n. 9, p. 1807-1820, 1999.