Analytische eigenschaften von hydrophilen glykolmethacrylat-polymeren mit chemisch gebundenem 8-oxychinolin

Slovák, Z.; Slováková, S.; Smrž, M.

doi:10.1016/s0003-2670(01)81960-7

Cited by 36 publications

(7 citation statements)

References 3 publications

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“…A possible explanation of apparent discrepancies In the heterogeneous acid dissociation constants of slllca-lmmoblllzed 8-qulnollnol Is also proposed. 8-Quinolinol, also known as oxine (HOx), has been used extensively in the past in immobilized form for the preconcentration of trace levels of metal ions from high ionic strength aqueous samples (1)(2)(3)(4). Generally the extracted metals are eluted as a mixture with aqueous acid and the coeluted metals are then determined in situ although sometimes a partial separation is achieved.…”

mentioning

confidence: 99%

Synthesis of silica-immobilized 8-quinolinol with (aminophenyl)trimethoxysilane

Marshall¹,

Mottola²

1983

Anal. Chem.

119

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A more efflcleint and tlme-savlng synthetic route to sllicalmmoblllzed 8-quinolinol has been developed that results In a product exhibltlng a relatively large exchange capacity. A comparison of dlfferent sllica supports has been performed and the resulting slllca-bound 8-qulnolinol materlals have been characterized with regard to exchange capaclty, carbon content, acid-base properties, and stablllty. The dependence of capaclty on surface area and pore size Is dlscussed and a comparison i o conventionally prepared silica-lmmoblllzed 8-qulnolinols is made. A posslble explanatlon of apparent discrepancies in the heterogeneous acid dissoclatlon constants of slllca-immoblllzed 8-qulnollnol Is also proposed.

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mentioning

confidence: 99%

Synthesis of silica-immobilized 8-quinolinol with (aminophenyl)trimethoxysilane

Marshall¹,

Mottola²

1983

Anal. Chem.

119

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“…In particular, metal chelating resins and immobilized (adsorbed or chemically bonded) chelates have found widespread application for the concentration and/or separation of trace metals from a variety of matrices . Dimethylglyoxime (2), alkylamines, diamines, xanthates, and dithiocarbamates (3)(4)(5)(6), propylenediamenetetraacetic acid (7), n-butylamides (8), N-substituted hydroxylamine (9), hexylthioglycolate (10), ferroin-type chelating agents (11), iminodiacetate (Bio-Rad Laboratories, Richmond, CA), amidoxime (12), dithizone (13,14), and 8hydroxyquinoline (14)(15)(16)(17)(18)(19)(20)(21) have all been immobilized on various substrates. Tailoring chemically bonded chelating agents to specific needs allows the use of selective or general concentration schemes and also permits the "recycling" of the chelating agent.…”

mentioning

confidence: 99%

Preconcentration of trace elements from seawater with silica-immobilized 8-hydroxyquinoline

Sturgeon¹,

Berman²,

Willie³

et al. 1981

Anal. Chem.

273

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“…Preparation of a constrained sediment probe. For preparation of DGT probes, the resin gel mixture contained 0.5 g of ionexchange resin Spheron-OxinÒ 1000 (40-63 mm, Lachema Brno, Czech Republic) [23][24][25] in 5 mL of the hot agarose solution. The slots (cavities) of the preheated commercially available constrained DET sediment probe (R-PCP, DGT Research Ltd.) were filled immediately with this agarose solution.…”

Section: Gel and Probe Preparationmentioning

confidence: 99%

“…The aim of this work is to report on the performance of a modified DET constrained sediment probe, as a segmented probe for application in DGT technique. An ion-exchanger with anchored 8-hydroxyquinoline analytical groups [23][24][25] was used in the preparation of resin gel strips as an alternative to the commonly employed Chelex 100 ion-exchanger. This type of exchanger exhibits higher resistance to the interference effects of ubiquitous alkali-earth elements and/or natural ligands, e.g.…”

Section: Introductionmentioning

confidence: 99%

Segmented sediment probe for diffusive gradient in thin films technique

Dočekal

Gregušová

2012

Analyst

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A new modification of a constrained sediment probe was tested for application in the diffusive gradient in thin films technique (DGT). The sediment probes packed with agarose based resin and diffusive gels were exposed under laboratory conditions to well-mixed test solutions of cadmium and nickel as model elements. The reproducibility of metal uptake in segments (strips) of resin gel with anchored 8-hydroxyquinoline functional groups (Spheron-Oxin® ion exchanger) was studied. The relative yield of uptake of metals in resin gel strips, determined as the ratio of the time-averaged DGT-measured metal concentration and the concentration of a metal in the test solution, showed that the effective sampling area was larger than the geometric area of the resin gel strip. This relative yield is in very good agreement with the theoretical value obtained by the Finite Element Method (FEM) in calculation of diffusion processes. The performance of the modified constrained probe is demonstrated by an example of uranium, iron and manganese depth profiling in a spiked sediment core. Utilization of the new segmented sediment probe in the DGT technique is very simple. Its application does not require special devices and labor-intensive procedures. It can provide sediment depth profiles of metals with the resolution down to the millimetre level.

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Analytische eigenschaften von hydrophilen glykolmethacrylat-polymeren mit chemisch gebundenem 8-oxychinolin

Cited by 36 publications

References 3 publications

Synthesis of silica-immobilized 8-quinolinol with (aminophenyl)trimethoxysilane

Synthesis of silica-immobilized 8-quinolinol with (aminophenyl)trimethoxysilane

Preconcentration of trace elements from seawater with silica-immobilized 8-hydroxyquinoline

Segmented sediment probe for diffusive gradient in thin films technique

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