Complex formation of heavy metals with 4-(2-pyridy-lazo)resorcinol chemically immobilized on silica gel

Yanovskaya, E. S.; Kuzovenko, V. A.; Тертых, В. А.; Kichkiruk, O. Yu.

doi:10.1134/s107032840708012x

Cited by 2 publications

(2 citation statements)

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“…37 At pH 6.8 ± 7, it quantitatively adsorbs some toxic metal ions such as Pb II , Cd II and Ni II . This adsorbent is promising for solid-phase preconcentration of heavy metals in the analyses of various natural specimens.…”

Section: Methodsmentioning

confidence: 99%

“…It is because in thiosulfate solution, silver exists initially as complex anions that undergo stepwise dissociation to Ag + (Scheme 19). The adsorption of other noble metals that exist in the form of complex chlorometallate anions under these conditions and possibly the [Ag(S 2 O 3 )] 37 anion proceeds according to the anion exchange mechanism. The anion exchange ability of polymer 28 is due to the ability of its functional group to exist in the betaine form (Scheme 20).…”

Section: Scheme 18mentioning

confidence: 99%

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Organosilicon ion-exchange and complexing adsorbents

Власова¹,

Оборина²,

Grigoryeva³

et al. 2013

Russ. Chem. Rev.

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Data on the ion-exchange and complexing orga-Data on the ion-exchange and complexing organosilicon adsorbents published during the last 10 ± 12 years, nosilicon adsorbents published during the last 10 ± 12 years, including the results of systematic research of the authors, including the results of systematic research of the authors, are summarized and analyzed. The following types of are summarized and analyzed. The following types of substances are considered: silicas with covalently grafted substances are considered: silicas with covalently grafted modifiers, silicas and aluminosilicates with non-covalently modifiers, silicas and aluminosilicates with non-covalently grafted modifiers and carbofunctional polyorganylsilses-grafted modifiers and carbofunctional polyorganylsilsesquioxanes prepared by polycondensation of appropriate quioxanes prepared by polycondensation of appropriate organosilicon monomers. Adsorbents of these types find organosilicon monomers. Adsorbents of these types find extensive practical use, in particular, as analytical reagents extensive practical use, in particular, as analytical reagents for determination of metals in natural and artificial speci-for determination of metals in natural and artificial specimens, agents for isolation of valuable elements from indus-mens, agents for isolation of valuable elements from industrial wastes and agents for removal of especially hazardous trial wastes and agents for removal of especially hazardous components from wastes and effluents. The bibliography components from wastes and effluents. The bibliography includes 109 references includes 109 references. .

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Section: Methodsmentioning

confidence: 99%

Section: Scheme 18mentioning

confidence: 99%