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  • Author or Editor: D. Teherani x
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Abstract  

Arsenic, scandium, chromium, cobalt and nickel were determined by neutron activation analysis in various Chrysolite-Asbestos from Canada, Russia, Italy in an asbestos plate, and in dry, as well as in wet manufactured asbestos. Following concentration values were found: for As 0.01–5.5 ppm, for Sc 5.4–14.80 ppm, for Cr 79.5–918.8 ppm, for Co 10.8–80.9 ppm, for Ni 148–1786 ppm. Statistically significant differences /t=0.05/ in contents of As, Sc, Cr, Co and Ni were detected in the different samples of asbestos. The concentration of As and Cr in Italian asbestos were considerably higher than in Canadian chrysolite.

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Abstract  

Various chrysolite-asbestos from Canada and Russia, asbestos plate and, dry as well as wet manufactured asbestos, were analyzed for Hg, Fe, Eu, La and K by the neutron activation method. Following concentration values were found: Hg 0.01–0.46 ppm, Fe 4818–32738 ppm, Eu 0.02–0.125 ppm, La 0.061–0.874 ppm, K 14.829–358.5 ppm. Statistically significant differences /t=0.05/ in Hg, Fe, Eu, La and K contents were found in the different asbestos samples. The concentration of Hg, Fe, Eu in Italian asbestos were considerably higher than in Canadian chrysolite. High Concentration of La, K were found in Austrian asbestos plate.

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Abstract  

Various mushrooms from Austria were analyzed for103Ru,137Cs and134Cs after the reactor accident at Chernobyl /19.6.–26.10. 1986/ by -spectroscopy. The following concentration (nCi/kg wet weight) values were found:103Ru 0.1–4 nCi/kg,137Cs 0.5–104 nCi/kg,134Cs 0.3–42 nCi/kg. The concentration of cesium isotopes in Cantharellus cibarius /lower Austria/, Leccinum scabrum /lower Austria/ and Xevocomus badius /lower Austria/ was considerably higher than in other mushroom samples.

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Abstract  

Various rice species, marketed in Austria, were analyzed for their Se, Cr, Ni, Rb, Fe, Co, Cs, Ag and Hg contents by neutron activation analysis. The concentration values found for Se ranged between 0.023 and 0.265 ppm, for Cr 0.540–1.875 ppm, for Ni 0.359–0.965 ppm, for Rb 1.604–6.400 ppm, for Fe 24.3–139.8 ppm, for Co 0.026–0.055 ppm, for Cs 0.016–0.032 ppm, for Ag 0.0006–0.0034 ppm, for Hg 0.003–0.023 ppm. Statistical analysis showed in the majority of cases that there is a significant difference in Se, Cr, Ni, Rb, Fe, Co, Hg contents but not in Cs. Highest values of Se and Fe were found in rice from Belgium /long seed, super patna/, whereas the Cr concentration was the highest in rice from Thailand /siam patna/. Ni was highest in rice from Uncle Ben's, Rb in Kresto from USA.

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Abstract  

Various samples from Styria /grass/ and Salzburg /cheese/ were analyzed for131I,134Cs and137Cs concentration during April–July 1986 by -ray spectrometry. The concentrations are reported in nCi kg–1 wet weight. The concentration values found for131I 0.2–17.2 nCi kg–1 /grass/, 0.1–0.5 nCi kg–1 /cheese/, for134Cs 1.1–6.2 nCi kg–1 /grass/, 0.2–1.3 nCi kg–1 /cheese/, for137Cs 1.6–15.7 nCi kg–1 /grass/, 0.3–2.2 nCi kg–1 /cheese/. While radioactivity of131I,134Cs and137Cs in cheese samples increases from May to June, it decreases in grass samples from May to July 1986.

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Abstract  

The concentration of the radionuclides103Ru,134Cs and137Cs in sewage sludge samples which were collected between July and September 1986, were measured by -ray spectrometry. High concentration of103Ru,134Cs and137Cs were found in sewage sludge samples from Lower-Austria /Scheibbs, Zwettl/ and Styria /Eisenerz, Leoben/. the radioactivity concentration of137Cs was two times higher than that of134Cs. Following concentration values were found:103Ru 0.1–63.0 nCi kg–1,134Cs 0.3–41.6 nCi kg–1, and137Cs 0.3–83.3 nCi kg–1. The activity of these nuclides decreased from July 1986 to September 1986.

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Abstract  

Many mushrooms from Austria collected between May 25 and September 21, 1987 were analyzed for137Cs and134Cs by -spectroscopy one year after the reactor accident at Chernobyl. The following concentrations /nCi kg–1 wet weight/ were found:137Cs 0.4–43.2 nCi kg–1,134Cs 0.1–16.4 nCi kg–1. The concentration of cesium isotopes in Cantharellus cibarius /Klagenfurt/ and Xerocomus badius /Upper-Austria, Mühlviertel/ were considerably higher than the tolerance level /5 nCi kg–1/.

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Abstract  

As a consequence of the reactor-accident of Chernobyl on Tuesday 29 April 1986 the environmental radioactivity in Austria increased for above the level recorded before. Depending on the amount of precipitation the deposition of radioactive fallout showed great differences. Many water samples /rain water, lake water, swimming pool water, drinking water, underground water/ collected /during period of April 29 to May 30/ from Vienna, Lower Austria and Steiermark were analyzed for90Sr. The following concentrations in /nCi 1–1/ of90Sr was found: 8.69±2.3 for rain water, 0.09±0.12 for lake water, 0.08–0.18 for swimming pool, 0.04–0.13 for drinking water, 0.07–0.2 for underground water. The90Sr concentration was not higher than the maximal permissible /0.004–0.4 nCi 1–1/ except for rain water.

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Abstract  

Tissues samples of chicken /blood, liver, spleen, fat, pancreas, kidney, lung, breast muscle, brain, femur, faeces, egg yolk, white of egg/, were analyzed for scandium concentration. ScCl3 was applied intravenously /1 mg kg–1 body weight/. High scandium concentrations were found in the liver /34. 35 ppm/, spleen /15.46 ppm/, and lung /15.52 ppm/ three days after application. This experiment shows that accumulation of scandium occurs in the yolk of egg but not in the white of the egg.

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Abstract  

Various Syrian cigarettes /Hamra long filter, Oreidt, Granata, Palmyra, Hamra short filter/ were analyzed for their210Po content.210Po was precipitated on a silver plate after chemical separation and measured by -spectroscopy. The concentration values found for210Po ranged between 0.02 and 0.08 pCi g–1.

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