Importance of site specific data on carbon content in environmental matrices for accurate determination of carbon-14 specific activity

Autor:	P. M. Ravi, S. Rashmi Nayak, Renita Shiny D'Souza, N. Karunakara, B. N. Dileep, S. Bharath, M.P. Mohan
Rok vydání:	2019
Předmět:	Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health chemistry.chemical_element Biota 010403 inorganic & nuclear chemistry 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry Nuclear Energy and Engineering chemistry Fish Radiology Nuclear Medicine and imaging Specific activity Carbon-14 Food science Carbon Spectroscopy
Zdroj:	Journal of Radioanalytical and Nuclear Chemistry. 322:879-890
ISSN:	1588-2780 0236-5731
DOI:	10.1007/s10967-019-06683-7
Popis:	Carbon content (%) measurement for determination of 14C specific activity (Bq kg−1C) in environmental matrices based on thermal oxidation of the sample using pyrolyser is discussed. The carbon content in biota samples (N = 574) of the tropical region were in the range 30–45%, 28–47%, 31–46%, 32–45%, 43–49%, and 37–50% with corresponding mean values of 38 ± 3.1%, 38 ± 4.4%, 41 ± 3.1%, 41 ± 3.7%, 46 ± 1.5%, and 44 ± 5.1% respectively for wild plant leaves, vegetables, fruits, cereals, wood, and fish samples. The present study shows that carbon content within the species and category (fruit, leaves, vegetables, etc.) of the sample may differ up to ~ 20% points.
Databáze:	OpenAIRE
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