期刊
MARINE POLLUTION BULLETIN
卷 159, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2020.111490
关键词
Pb-210; Sediments; Radiometry; Statistics; Chronology
资金
- International Atomic Energy Agency (IAEA) Coordinated Research project Study of Global Temporal Trends of Pollution in Selected Coastal Areas by the Application of Isotopic and Nuclear Tools [CRP K41016]
- Government of the Principality of Monaco
Laboratories from 14 countries (with different levels of expertise in radionuclide measurements and Pb-210 dating) participated in an interlaboratory comparison exercise (ILC) related to the application of Pb-210 sediment dating technique within the framework of the IAEA Coordinated Research Project. The laboratories were provided with samples from a composite sediment core and were required to provide massic activities of several radionuclides and an age versus depth model from the obtained results, using the most suitable Pb-210 dating model. Massic concentrations of Zn and Cu were also determined to be used for chronology validation. The ILC results indicated good analytical performances while the dating results didn't demonstrate the same degree of competence in part due to the different experience in dating of the participant laboratories. The ILC exercise enabled evaluation of the difficulties faced by laboratories implementing Pb-210 dating methods and identified some limitations in providing reliable chronologies.
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