caa a22 4500 467943583 CHVBK 20180405193734.0 cr unu---uuuuu 170328e20050101xx s 000 0 eng 10.1007/s10809-005-0011-3 doi (NATIONALLICENCE)springer-10.1007/s10809-005-0011-3 (NATIONALLICENCE)springer-10.1007/s10809-005-0047-4 Determination of carbon and nitrogen in meteorites using gamma-ray activation analysis [Elektronische Daten] [B. Chapyzhnikov, D. Badyukov, Yu. Tsipenyuk] The volume concentration of carbon and nitrogen in different meteorites was determined by gamma-ray activation analysis on a microtron. The 11C and 13N radionuclides forming in photoneutron reactions were isolated by high-temperature extraction; their positron activity was then deactivated by the method of gamma-gamma coincidence of annihilation gamma quanta. A clear correlation was found between the sample darkness and the carbon concentration; the latter was at a level of 10-2 wt %. No correlations was observed for nitrogen; its concentration was one order of magnitude lower than that of carbon and varied over the range (2-6) ×10-3 wt %. The results obtained suggest that carbon entered different structural defects in chondrites as a result of its redistribution upon gaseous activity on parent bodies. Pleiades Publishing, Inc., 2005 Chapyzhnikov B. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul., Kosygina 19, 119991, Moscow, Russia aut Badyukov D. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul., Kosygina 19, 119991, Moscow, Russia aut Tsipenyuk Yu Kapitsa Institute for Physical Problems, Russian Academy of Sciences, ul. Kosygina 2, 119334, Moscow, Russia aut Journal of Analytical Chemistry Nauka/Interperiodica 60/1(2005-01-01), 45-48 1061-9348 60:1<45 2005 60 10809 https://doi.org/10.1007/s10809-005-0011-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10809-005-0011-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chapyzhnikov B. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul., Kosygina 19, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Badyukov D. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul., Kosygina 19, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Tsipenyuk Yu Kapitsa Institute for Physical Problems, Russian Academy of Sciences, ul. Kosygina 2, 119334, Moscow, Russia aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 60/1(2005-01-01), 45-48 1061-9348 60:1<45 2005 60 10809 NATIONALLICENCE 700 1- Badyukov D. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, 119991, Moscow, Russia aut NATIONALLICENCE 856 40 https://doi.org/10.1007/s10809-005-0047-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chapyzhnikov B. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, 119991, Moscow, Russia aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer