Determination of selenium in diet by radiochemical neutron activation analysis

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1988
El-Hallaq, Yasser Hassan
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https://hdl.handle.net/11511/8715
Graduate School of Natural and Applied Sciences, Thesis

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DETERMINATION OF SELENIUM IN HUMAN DIETS BY RADIOCHEMICAL NEUTRON-ACTIVATION ANALYSIS
ELHALLAQ, YH; GOKMEN, IG; ARAS, NK; Gökmen, Ali (Royal Society of Chemistry (RSC), 1992-03-01)
A post-irradiation radiochemical separation technique was tested for the determination of selenium levels in diet samples, collected by using a duplicate portion technique, from both rural and urban population groups in Turkey. The technique involved sample irradiation, acid digestion, selective distillation, precipitation and filtration steps. During the separations it was possible to determine the yield of each sample using a stable selenium carrier. An average chemical yield of 71 +/- 3% was obtained ...
DETERMINATION OF SELENIUM IN DIET BY ZEEMAN EFFECT GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY FOR CALCULATION OF DAILY DIETARY INTAKES
ARI, U; Volkan, Mürvet; ARAS, NK (American Chemical Society (ACS), 1991-12-01)
The selenium content of Turkish diets was determined by Zeeman effect graphite furnace atomic absorption spectrometry (GFAAS). Samples, collected from two different socioeconomic groups by duplicate portion technique, were digested with concentrated nitric acid in acid bombs, and hydrogen peroxide was added for complete oxidation. The digested solutions were then analyzed by GFAAS with the nickel chemical modifier addition. The detection limit for Se(VI) was 10.5 ng/mL for aqueous standard solutions. Averag...
Determination of phytate in the Turkish diet by phosphorus-31 Fourier transform nuclear magnetic resonance spectroscopy
Ersoz, Arzu; Akgun, Hulya; Aras, Namik K. (American Chemical Society (ACS), 1990-3)
ThephytatecontentofdailydietsamplesfromuppermiddleclassfamiliesinTurkeywasdeter-minedbyphosphorus-31Fouriertransformnuclearmagneticresonancespectroscopy(31PFTNMR).Samples,collectedbyaduplicate-portiontechnique,werehomogenizedandfreeze-dried.Dietsam-pleswerestirredfor0.5hinaqueous3%(w/v)trichloroaceticacid,EDTAwasadded,andthepHwasadjustedto4.5±0.5beforeanalysis.Theaveragephytatecontentof10dietsampleswasfoundtobe1.55±0.70g/kg
Determination of selenium in human diet by Zeeman effect graphite furnace AAS
Arı, Ülkü; Aras, Namık K.; Volkan, Mürvet; Department of Chemistry (1988)
Determination of minor and trace elements in human diet by atomic absorption spectroscopy
Mumcu, Şafak; Aras, Namık K.; Department of Chemistry (1987)
Citation Formats
Y. H. El-Hallaq, “Determination of selenium in diet by radiochemical neutron activation analysis,” Middle East Technical University, 1988.
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