Journal
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
Volume 231, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jenvrad.2021.106553
Keywords
Pb-210; Po-210; PSA; Liquid scintillation counting; Simultaneous determination
Categories
Funding
- National Key Research and Development Project [2019YFC1604804]
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A fast and cost-efficient method for the simultaneous determination of Pb-210 and Po-210 in seafood samples was developed and validated, with similar recoveries for both isotopes. The proposed method has a minimum detectable activity suitable for measuring Pb-210 and Po-210 in seafood samples.
The measurement of Pb-210 and Po-210 in seafood samples has attracted tremendous interest because of their radiotoxicity. In this study, a fast and cost-efficient method for the simultaneous determination of Pb-210 and Po-210 in seafood samples by ultralow-level liquid scintillation counting after separation on a Sr center dot spec column was developed. The recoveries of Pb-210 and Po-210 were similar to 70% and similar to 85%, respectively. The minimum detectable activity of the proposed method for Pb-210 and Po-210 was 3.85 Bq/kg and 1.50 Bq/kg, respectively, which is suitable for the determination of Pb-210 and Po-210 in seafood samples. The radiochemical procedure was validated by measuring Pb-210 and Po-210 activity concentrations in IAEA-certified reference materials and successfully applied to shrimp and clam samples.
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