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dc.contributor.advisorEroğlu, Ahmet Eminen
dc.contributor.authorBoyacı, Ezel-
dc.descriptionThesis (Doctoral)--İzmir Institute of Technology, Chemistry, İzmir, 2011en
dc.descriptionIncludes bibliographical references (leaves: 166-179)en
dc.descriptionText in English; Abstract: Turkish and Englishen
dc.descriptionxxi, 179 leavesen
dc.descriptionFull text release delayed at author's request until 2015.01.15en
dc.description.abstractIn the first part of the study, amino-, mercapto- and bifunctional silica-based solid phase extraction (SPE) sorbents were developed, characterized and utilized for sorption and speciation of inorganic As(III)/As(V). Critical parameters on sorption and desorption of species were investigated. The proposed methodology was validated through the analysis of a standard reference material. The subsequent studies were concentrated on the transfer of the experience gained during the modification of silicate surface for preparation of SPE sorbents to the preparation of SPME coatings. The second part of the thesis includes the development, characterization and use of solid phase microextraction (SPME) fibers for the speciation of inorganic and organometallic arsenic compounds. SPME fiber coatings have been prepared by two routes, namely, sol-gel synthesis and nanoparticle immobilization. Fibers having amino functionality synthesized through the sol-gel process were used in the speciation of As(III), As(V), monomethyl arsonic acid (MMA) and dimethyl arsinic acid (DMA). HPLC-HGAAS or HPLC-ICPMS was used in the measurements. Speciation of arsenic compounds was also realized using SPME fibers modified with zero valent iron nanoparticles embedded into an agarose matrix. The detection of the solid phase microextracted analytes was realized by HPLC-ICPMS. Prepared fibers have shown superior extraction for arsenicals. The effect of several parameters on the extent of extraction of arsenic species; namely, solution pH, extraction time, agitation speed and ionic strength were investigated. Validity was checked via the application of the proposed methodology on real samples (tap water, bottled water and geothermal water, urine samples) and standard reference materials.en
dc.publisherIzmir Institute of Technologyen_US
dc.subject.lcshExtraction (Chemistry)en
dc.subject.lcshChemistry, Analytic--Techniqueen
dc.subject.lcshCoating processesen
dc.titleDevelopment of novel functionalized solid phase extraction (SPE) sorbents and solid phase microextraction (SPME) fiber coatings for analytical applicationsen_US
dc.typeDoctoral Thesisen_US
dc.departmentThesis (Doctoral)--İzmir Institute of Technology, Chemistryen_US
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item.openairetypeDoctoral Thesis-
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