Potential application of plutonium isotopes as a tracer in tree ring:A review
Plutonium(Pu)nuclide has strong radiation toxicity and biological toxicity,which is very harmful to animals,plants and human health.Thus,it is important to analyze the level,migration and pollution history of Pu isotopes in tree rings for ecological security and phytotoxicity evaluation.Under the background of the rapid development of China's nuclear power industry along coastal areas,it is particularly necessary to estab-lish the background data,including the Pu activity concentration as well as isotopic composition in the tree rings collected from different regions.In the present work,based on collecting and summarizing the limited ex-isting literature and materials,the source and deposition mode of Pu isotope in the environment are briefly de-scribed.Then,the spatial pathway of Pu isotopes entering tree rings,the radial distribution characteristics of Pu isotope in tree ring samples as well as its environmental significance are also discussed.Finally,we emphas-ized the importance of developing chemical analysis method for accurately determining Pu isotopes with mass spectrometry technology and the research direction of its application research of this nuclide in tree rings,which is of great significance to promote the study of Pu isotopes as a tracer in the tree ring.
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