ISSN:
1436-5073
Keywords:
modified silica gel
;
preconcentration
;
2-mercaptobenzimidazole
;
copper
;
zinc
;
cadmium
;
mercury and lead determination
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The chemically modified silica, obtained by reacting 2-mercaptobenz-imidazole with 3-chloropropyl silica gel, was used to adsorb Cu(II), Zn(II), Cd(II) and Pb(II) from aqueous solutions at various pH. Between pH 3–5, the order of selectivity was Hg(II) 〉 Cd(II) ≫ Cu(II) ∼ Zn(II) ∼ Pb(II). Under batch conditions retentions of 100% were achieved for all metals except for Pb(II) where 93% was attained. Under column conditions recoveries of 100% were obtained for all metals.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01244293
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