Determination of germanium by AAS in chloride-containing matrices

Date

1996-06-01

Author

Anwari, MA
Abbasi, HU
Volkan, Mürvet
Ataman, Osman Yavuz

Metadata

Show full item record

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

Item Usage Stats

175
views

0
downloads

Interference effects of NaCl on the ET-AAS determination of Ge have been studied. The use of several matrix modifiers to alleviate this problem such as Ni and Zn perchlorates and nitrates, nitric acid, ammonium nitrate are reported. The stabilizing effect of Zn and Ni perchlorates allows the use of high pretreatment temperatures. NaCl is thus thermally volatilized from the atomizer by employing pretreatment temperatures higher than 1500 degrees C resulting in an improved sensitivity. Germanium levels in zinc plant slag samples, have been determined and compared to those obtained for the same samples spiked with NaCl with platform and wall atomization using nickel perchlorate as a matrix modifier. The results were compared with those from a hydride generation system equipped with a liquid nitrogen trap. The recoveries for germanium have been almost complete and amount to 99% for the original slag samples and 80% for 15% (w/w) NaCl containing spiked samples.

Subject Keywords

Atomic-absorption spectrometry, Atomization

URI

https://hdl.handle.net/11511/53801

Journal

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Effect of nitric acid for equal stabilization and sensitivity of different selenium species in electrothermal atomic absorption spectrometry Sahin, F; Volkan, Mürvet; Ataman, Osman Yavuz (2005-08-15) Determination of selenium by electrothermal atomic absorption spectrometry (ETAAS) is complicated by the presence of different species of this analyte. The presence of different oxidation states (-II, IV and VI) may result in different sensitivities obtained for each species rendering impossible the use of a single species for calibration. These species also exhibit different behaviours regarding thermal stabilities; the temperature program must be provided to conform to this problem. Chemical modifiers are...
Determination of volatile organic compounds in different microenvironments by multibed adsorption and short-path thermal desorption followed by gas chromatographic-mass spectrometric analysis Oznur, Kuntasal; Deniz, Karman; Daniel, Wang; TUNCEL, SEMRA; Tuncel, Süleyman Gürdal (2005-12-16) A multiphase assurance approach was developed for the accurate and precise determination of volatile organic compounds (VOCs) in different microenvironments. This approach includes (i) development of a method including adsorption of VOCs onto a multisorbent media followed by short-path thermal desorption (SPTD) pre-concentration and gas chromatography (GC) coupled to a mass spectrometry (MS) quantification, (ii) validation of the sampling and analytical method and (iii) validation of the data using a multid...
Characterization of the polymer of a dipyrrolyl monomer by pyrolysis mass spectrometry Ertas, Merve; Hacaloğlu, Jale; Toppare, Levent Kamil (2004-08-01) In this work, characterization of a homopolymer of succinic acid bis(4-pyrrol-1-ylphenyl) ester prepared by galvonastatic polymerization was carried out by direct pyrolysis mass spectrometry. Although decomposition of the monomer yielding mainly butadionic acid and pyrrole occurred under the galvonastatic polymerization conditions, growth of the polymer through the pyrrole moieties was also achieved, yielding a ladder-type polymer film. The polypyrrole chains contained both quinoid and aromatic units as in ...
Interference studies in slotted silica tube trap technique Korkmaz, D; Mahmut, M; Helles, R; Ertas, N; Ataman, Osman Yavuz (2003-01-01) Interference effects of KCl, NH4H2PO4, (NH4)(2)CO3, MgCl2, NH4NO3, NaNO3, (NH4)(2)SO4, MgSO4.7H(2)O, CaCl2, Ca(NO3)(2) and NaCl on Bi, Cd, In, Pb and Sb were investigated using the atom trapping technique with a double slotted silica tube. Analyte solutions at concentration levels of 60, 6, 300, 75, 100 ng mL(-1) for Bi, Cd, In, Pb and Sb, respectively, were aspirated into an air-acetylene flame and analyte species were collected on the silica surface. Revolatilization was effected by aspirating IBMK at the...
PURIFICATION AND CHARACTERIZATION OF HUMAN MENINGIOMA M2-TYPE PYRUVATE-KINASE MELLATI, AA; YUCEL, M; ALTINORS, N; Gündüz, Ufuk (1993-10-01) The M2-type pyruvate kinase was purified from human meningioma by ammonium sulfate precipitation, followed by ion exchange and affinity chromatography. The specific activity of the purified enzyme was 33.4 U/mg with a yield of 6.5%.

Citation Formats

M. Anwari, H. Abbasi, M. Volkan, and O. Y. Ataman, “Determination of germanium by AAS in chloride-containing matrices,” FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, pp. 284–288, 1996, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53801.