Development of novel functionalized solid phase extraction (spe) sorbents and solid phasemicroextraction (spme) fiber coatings for analytical applications
tarafından
 
Boyacı, Ezel.

Başlık
Development of novel functionalized solid phase extraction (spe) sorbents and solid phasemicroextraction (spme) fiber coatings for analytical applications

Yazar
Boyacı, Ezel.

Yazar Ek Girişi
Boyacı, Ezel.

Yayın Bilgileri
[s.l.]: [s.n.], 2011.

Fiziksel Tanımlama
xxi, 179 leaves.: ill. + 1 computer laser optical disc.

Özet
In 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.

Konu Başlığı
Extraction (Chemistry).
 
Chemistry, Analytic -- Technique.
 
Coating processes

Yazar Ek Girişi
Eroğlu, Ahmet E.

Tüzel Kişi Ek Girişi
İzmir Institute of Technology. Chemistry.

Tek Biçim Eser Adı
Thesis (Doctoral)--İzmir Institute of Technology: Chemistry.
 
İzmir Institute of Technology: Chemistry--Thesis (Doctoral).

Elektronik Erişim
Access to Electronic Versiyon.


LibraryMateryal TürüDemirbaş NumarasıYer NumarasıDurumu/İade Tarihi
IYTE LibraryTezT000979QD63.E88 B789 2011Tez Koleksiyonu