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Akademický článek

Removal of Some Heavy Metal Cations from Aqueous Solution by Adsorption onto Natural Kaolin

Autor: H. Ceylan, T. Şahan, R. Gürkan, Ş. Kubilay

Publikováno v: Adsorption Science & Technology, Vol 23 (2005)

The adsorption removal of some heavy metal cations such as Cu(II), Zn(II) and Co(II) from aqueous solution onto kaolin has been studied using the batch method with initial metal ion concentrations within the range 15–70 mg/l. The percentage adsorpt

Externí odkaz: https://doaj.org/article/1f280b0c047a4b75b5753421d8540b93

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Application of ultrasound assisted-cloud point extraction coupled with spectrophotometry for the selective extraction/pre-concentration of low levels of inorganic Hg (as Hg22+/Hg2+) from liquid matrices

Autor: R. Gürkan, H. B. Zengin

This study presents the analytical characterisation of a low-cost, selective and sensitive method for inorganic Hg (as Hg22+/Hg2+) determination in liquid matrices based on spectrophotometry. The novelty of the study lies in combining the pre-concent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::307e2d03c69dd3e87409e5ab157c950c

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A new pre-concentration procedure based on poly(styrene-co-maleamide and imide) copolymers modified with 2-hydrazinobenzothiazole prior to spectrophotometric monitoring of inorganic as (as As(III)) in edible vegetable oils

Autor: R, Gürkan, H B, Zengin

Publikováno v: Food Chemistry. 409:135335

This study describes the development of 2-hydrazinobenzothiazole modified-amide/imide co-polymers for the extraction/pre-concentration of trace As(III), from edible vegetable oils. Their characterization was realized by help of instrumental technique

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccaf9ebc377d678507d46c2e257ce6e9
https://doi.org/10.1016/j.foodchem.2022.135335

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A magnetic nanocomposite based on amine‑functionalized pH‑sensitive functional poly(styrene‑co‑maleic anhydride) copolymer for selective extraction, pre‑concentration and determination of sub‑trace Ag+ and Cu2+ ions from edible vegetable oils by a combination of spectrophotometry and ultrasound‑assisted cloud point extraction

Autor: H. B. Zengin, R. Gürkan

In this study, a new magnetic nanocomposite based on amine-functionalized pH-sensitive poly(styrene-co-maleic anhydride) copolymer derived from the tris(2-hydroxymethyl)aminomethane and Fe3O4 nanoparticles was designed, characterized and used in sele

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e48d2187d2b0135aacdc06c9ac772a19
https://hdl.handle.net/20.500.12418/13749

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Novel amide- and imide-co-polymers modified with sulfathiazole as efficient chelator for selective extraction, pre-concentration and determination of trace inorganic antimony (as Sb(III)) from edible vegetable oils by ultrasound assisted-cloud point extraction coupled to micro-volume UV-spectrophotometry

Autor: H.B. Zengin, R. Gürkan

Publikováno v: Journal of Food Composition and Analysis. 115:104931

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::021c9ea3cffa4d9dd4bc6b90d3969789
https://doi.org/10.1016/j.jfca.2022.104931

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Akademický článek

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Eco-friendly trace analysis of silver in beer/wine samples using a new co-polymeric nanocomposite based-ultrasound assisted-cloud point extraction combined with spectrophotometry

Autor: R. Gürkan, H.B. Zengin

F-604
In this study, a new magnetic nanocomposite based on the tris(2-hydroxymethyl)aminomethane-modified poly (styrene-co-N-maleimide) copolymer and Fe3O4 nanoparticles were prepared as a new micellar interface for preconcentration of trace lev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87319255b35670204442ac55781f4357
https://hdl.handle.net/20.500.12418/12858

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Selective extraction and enrichment of 5-hydroymethylfurfural from honey, molasses, jam and vinegar samples prior to sensitive determination by micro-volume UV-vis spectrophotometry

Autor: R. Gürkan, S. Dağdeviren Baş

F-480
In this study, a new method was developed for the extraction/enrichment of 5-hydroxymethylfurfural (5-HMF) from sample matrix prior to analysis. The method is based on the selective formation of the imine adduct and ionpair between 5-HMF a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea10065ae38c340a108ef5cac2379c0f
https://hdl.handle.net/20.500.12418/12870

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Application of a novel poly(SMAm)-Tris-Fe3O4 nanocomposite for selective extraction and enrichment of Cu(I) /Cu(II) from beer, soft drinks and wine samples, and speciation analysis by micro-volume UV–Vis spectrophotometry

Autor: H.B. Zengin, R. Gürkan

F-604
In this study, a novel functional nanocomposite was synthesized, characterized and selectively used in pHcontrolled separation, pre-concentration and speciation analysis of Cu(I) and Cu(II) from sample matrices where extraction is assisted

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5ff504536d5e740a87339d533430141
https://hdl.handle.net/20.500.12418/12911

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Application of a novel poly(SMAm)-Tris-Fe

Autor: H B, Zengin, R, Gürkan

Publikováno v: Talanta. 224

In this study, a novel functional nanocomposite was synthesized, characterized and selectively used in pH-controlled separation, pre-concentration and speciation analysis of Cu(I) and Cu(II) from sample matrices where extraction is assisted, facilita

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::544eae7b69e6fb0131c32baf247706d4
https://pubmed.ncbi.nlm.nih.gov/33379018

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