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Instrumental neutron activation analysis of kilogram-sized samples of dog food

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Abstract

Dog food from 24 regular 1 kg bags of the same production lot was evaluated by LS-NAA and conventional NAA. After analyzing the entire content of bags by LS-NAA, one test portion of 350 mg from each bag was evaluated by NAA. Br, Ca, K, Na and Zn could be measured by LS NAA and, except for K, the variability was higher than the uncertainty of measurement, indicating differences of composition between bags. The variation of results obtained from conventional NAA agreed with that from LS-NAA, confirming the representativeness of the small portions.

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Acknowledgments

The authors are thankful to The State of São Paulo Research Foundation – FAPESP for financial support (Process 10/52425-7).

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Authors and Affiliations

  1. Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, P.O. Box 96, Piracicaba, 13416-970, Brazil

    Camila Elias, Elisabete A. De Nadai Fernandes & Márcio Arruda Bacchi

  2. Human Resource Management, Delft University of Technology, P.O. Box 5, 2600 AA, Delft, The Netherlands

    Anneke Koster-Ammerlaan

  3. Radiation Science and Technology, Delft University of Technology, Mekelweg 15, 2629 JB, Delft, The Netherlands

    Peter Bode

Authors
  1. Camila Elias
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  2. Anneke Koster-Ammerlaan
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  3. Elisabete A. De Nadai Fernandes
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  4. Peter Bode
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  5. Márcio Arruda Bacchi
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Correspondence to Camila Elias.

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Elias, C., Koster-Ammerlaan, A., Fernandes, E.A.D.N. et al. Instrumental neutron activation analysis of kilogram-sized samples of dog food. J Radioanal Nucl Chem 306, 617–621 (2015). https://doi.org/10.1007/s10967-015-4265-4

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  • DOI: https://doi.org/10.1007/s10967-015-4265-4

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