Bomb-pulse 14C analysis combined with 13C and 15N measurements in blood serum from residents of Malmö, Sweden
Autor: | Elisavet Georgiadou, Cintia Bertacchi Uvo, Kristina Stenström, Peter M. Nilsson, Göran Skog, Sören Mattsson |
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Rok vydání: | 2013 |
Předmět: |
Serum
Adult Male Biophysics Bomb-pulse dating Food habits Review Article Blood serum Animal science Environmental Science(all) Radiation Monitoring Humans Stable isotopes General Environmental Science Sweden Carbon Isotopes Nuclear Weapons Radiation Nitrogen Isotopes Human blood Stable isotope ratio Middle Aged Serum samples C content Diet Fish Female Omnivore Demography |
Zdroj: | Radiation and Environmental Biophysics |
ISSN: | 1432-2099 0301-634X |
Popis: | The (14)C content of 60 human blood serum samples from residents of Malmö (Sweden) in 1978, obtained from a biobank, has been measured to estimate the accuracy of (14)C bomb-pulse dating. The difference between the date estimated using the Calibomb software and sampling date varied between -3 ± 0.4 and +0.2 ± 0.5 years. The average age deviation of all samples was -1.5 ± 0.7 years, with the delay between production and consumption of foodstuffs being probably the dominating cause. The potential influence of food habits on the (14)C date has been evaluated using stable isotope δ(13)C and δ(15)N analysis and information about the dietary habits of the investigated individuals. Although the group consisting of lacto-ovo vegetarians and vegans (pooled group) was not completely separated from the omnivores in a stable isotopic trophic level diagram, this analysis proved to add valuable information on probable dietary habits. The age deviation of the sampling date from the respective Calibomb date was found strongly correlated with the δ(13)C values, probably due to influence from marine diet components. For the omnivore individuals, there were indications of seasonal effects on δ(13)C and the age deviation. No significant correlation was found between the age deviation and the δ(15)N values of any dietary group. No influence of sex or year of birth was found on neither the (14)C nor the δ(13)C and δ(15)N values of the serum samples. The data were also divided into two groups (omnivores and pooled group), based on the level of δ(15)N in the samples. The consumption of high δ(15)N-valued fish and birds can be responsible for this clustering. |
Databáze: | OpenAIRE |
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