Temat: 14C - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Differentiation between fossil and biofuels by liquid scintillation beta spectrometry - direct method
Autorzy:: Edler, R.
Kaihola, L.
Powiązania:: https://bibliotekanauki.pl/articles/148479.pdf
Data publikacji:: 2010
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: biocarbon
liquid scintillation
biofuel
14C
Quantulus
PerkinElmer
Opis:: Liquid scintillation spectrometry of 14C in gasoline/ethanol and diesel oil was carried out using QuantulusŽ and straight mixtures of fuel and an organic scintillation cocktail. A linear correlation was found between the concentration of carbon that originates from the bioethanol (biocarbon) and the fuel mixture’s 14C activity in the range 0–100% (m/m) bioethanol content. Because of these good linear correlations, quantitative determination of a fuel’s biocarbon content can be made by 14C analysis. The direct method is also applicable to analysis of the bio-based materials dissolvable in solvents, which can be mixed with scintillation cocktails.
Źródło:: Nukleonika; 2010, 55, 1; 127-131
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Effect of liquid scintillating cocktail volume on 3H and 14C measurement parameters using a Quantulus spectrometer
Autorzy:: Komosa, A.
Ślepecka, K.
Powiązania:: https://bibliotekanauki.pl/articles/148489.pdf
Data publikacji:: 2010
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: liquid scintillating cocktail
tritium
14C
Quantulus
counting efficiency
standard quench parameter (SQP)
figure of merit (FOM)
Opis:: Results of study on the influence of cocktail volume on such measuring parameters as counting efficiency, standard quench parameter (SQP) and figure of merit (FOM) are described. Nine commercial cocktails were tested using a Quantulus spectrometer. Two kinds of vials (low-diffusion teflon-coated polyethylene (LD-PE) and high-performance glass (HP-G)) and two standard solutions (14C and 3H) were used. Measurements were performed at seven quench levels ensured by carbon tetrachloride addition to the scintillation vials. Various quench sensitivity of the studied cocktails was found. Cocktails based on simple benzene-derived solvents revealed the best quench resistance. In general, increasing cocktail volume caused an increase in the counting efficiency. However, the background increased as well, what resulted in FOM diminishing. Studied cocktails revealed also various responses to volume changes.
Źródło:: Nukleonika; 2010, 55, 2; 155-161
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

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