Cloud point preconcentration of germanium and determination by hydride generation atomic absorption spectrometry

Date

2000-07-14

Author

Boyukbayram, AE
Volkan, Mürvet

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

161
views

0
downloads

Cloud point methodology has been successfully employed for the preconcentration of germanium at trace levels from aqueous samples prior to hydride generation flame atomic absorption spectrometry (HGAAS). Germanium was taken into complex with quercetin in aqueous non-ionic surfactant (Triton X-114) medium and concentrated in the surfactant rich phase by bringing the solution to the cloud point temperature (19 degrees C). The preconcentration of only 50 mi of solution with 0.1% Triton X-114 and 2 x 10(-5) M quercetin at pH 6.4 gives a preconcentration factor of 200. Under these conditions, the detection limit (3s) and the sensitivity of the cloud-point extraction-HGAAS system were 0.59 and 0.0620 mu g 1(-1), respectively. The extraction efficiency was investigated at low germanium concentrations (10-30 mu g 1(-1)) and satisfactory recoveries (93-105%) were obtained.

Subject Keywords

Cloud point extraction, Preconcentration, Germanium, Hydride generation flame atomic absorption spectrometry, Quercetin

URI

https://hdl.handle.net/11511/37717

Journal

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY

DOI

https://doi.org/10.1016/s0584-8547(00)00233-0

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Interference effect of iron on the determination of gold in geological samples using the vapor generation technique and preconcentration in a graphite furnace Ertaş, Gülay; Ataman, Osman Yavuz (2006-04-01) A vapor generation procedure for the production of volatile species of An was studied using electrothermal atomic absorption spectrometry (ETAAS). The interference effects of iron in solution and in the gas phase in a quartz T-tube were studied for the first time in detail. A dual vapor generation system was used for a single heated quartz tube atomizer, so that it was possible to study interferences and classify them regarding their origins. Results show that both gas-phase and liquid-phase interferences a...
Sensitivity improvement for antimony determination by using in-situ atom trapping in a slotted quartz tube and flame atomic absorption spectrometry TİTRETİR DURAN, SERAP; Sik, Ahmet Inanc; ARSLAN, YASİN; Ataman, Osman Yavuz (2012-11-01) Significant improvement has been achieved for antimony determination using a slotted quartz tube (SQT) as an atom trap (AT) for in situ preconcentration and flame atomic absorption spectrometry (FAAS). The suggested technique consists of trapping analyte species during ordinary nebulization followed by releasing the collected analyte via introducing organic solvent. Procedures and analytical figures of merit have been presented for the techniques called FAAS. SQT-FAAS and finally SQT-AT-FMS with the relevan...
NEMATIC-SMECTIC A TRICRITICAL PHASE-TRANSITION IN BINARY MIXTURE OF LIQUID-CRYSTALS Yurtseven, Hasan Hamit (1992-10-01) The nematic-smectic A tricritical phase transition has been studied in binary mixtures of liquid crystals. By making the analogy between the "quasi-binary" fluid mixture and binary mixture of liquid crystals, we adapt the thermodynamic model for fluid mixtures due to Griffiths to the case of mixtures of liquid crystals.
Gas-Screen Slotted Quartz Tube Atomic Absorption Spectrometry: A Remedy for Reducing Interference Effects of Calcium and Chromium Gholami, M.; Yosefi, M. H.; Behkami, S.; Olyai, M. R. Talei Bavil; ARSLAN, YASİN; BAKIRDERE, Sezgin; Ataman, Osman Yavuz (2013-04-13) A simple device for the reduction of nonspectral interferences in flame atomic absorption spectrometry is proposed. It has been reported that the use of a gas screen (GS) system together with a slotted quartz tube (SQT) enhances the residence time of analyte atoms in measurement zone even more than the SQT alone. This combination causes enhancement of sensitivity and improves the reproducibility of absorbance measurements. In addition, it protects the optical windows of the atomic absorption spectrometer. T...
Light harvesting with Ge quantum dots embedded in SiO2 or Si3N4 Cosentino, Salvatore; Ozen, Emel Sungur; Raciti, Rosario; Mio, Antonio M.; Nicotra, Giuseppe; Simone, Francesca; Crupi, Isodiana; Turan, Raşit; Terrasi, Antonio; AYDINLI, ATİLLA; Mirabella, Salvo (2014-01-28) Germanium quantum dots (QDs) embedded in SiO2 or in Si3N4 have been studied for light harvesting purposes. SiGeO or SiGeN thin films, produced by plasma enhanced chemical vapor deposition, have been annealed up to 850 degrees C to induce Ge QD precipitation in Si based matrices. By varying the Ge content, the QD diameter can be tuned in the 3-9 nm range in the SiO2 matrix, or in the 1-2 nm range in the Si3N4 matrix, as measured by transmission electron microscopy. Thus, Si3N4 matrix hosts Ge QDs at higher d...

Citation Formats

A. Boyukbayram and M. Volkan, “Cloud point preconcentration of germanium and determination by hydride generation atomic absorption spectrometry,” SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, pp. 1073–1080, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37717.