Strontium Isotopes in Biological Material: A Key Tool for the Geographic Traceability of Foods and Humans Beings
| Autor: | Eleonora Braschi, Riccardo Avanzinelli, Sandro Conticelli, Ines Tescione, Sara Marchionni, Simone Tommasini, Martina Casalini |
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| Rok vydání: | 2017 |
| Předmět: |
Isochron dating
Radiogenic nuclide Isotope Earth science 010401 analytical chemistry Natural abundance 010502 geochemistry & geophysics 01 natural sciences Isotopes of strontium 0104 chemical sciences Food chain Geography Environmental chemistry Geochronology Nuclide 0105 earth and related environmental sciences |
| Zdroj: | Behaviour of Strontium in Plants and the Environment ISBN: 9783319665733 |
| Popis: | This chapter discusses the application in geology of the isotope ratio 87Sr/86Sr, where 87Sr is the long-lived radiogenic daughter of 87Rb (t1/2 = 48.8 billion years), and its use as geologic fingerprint for geographic traceability in food, forensic, and archaeological sciences. The 87Sr/86Sr ratio of any geological material (i.e. minerals and rocks) on Earth depends on its time integrated 87Rb/86Sr ratio and thus it is related to three main parameters: (1) the initial radiogenic isotopic abundance, (2) the age of the rock/mineral, and (3) the parent/daughter isotope ratio. Being a ratio between two nuclides of the same element 87Sr/86Sr is not modified during the uptake of the plant and it is transferred unchanged to all living beings of the food chain, thus remaining identical to that of the substratum from which the original plant or vegetable grew. |
| Databáze: | OpenAIRE |
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