ESR-dating: Problems encountered in the evaluation of the naturally accumulated dose /AD/ of secondary carbonates
Tóm tắt
Envestigations on the behaviour of the defect centres in calcites by means of electron spin resonance spectroscopy /ESR/ have shown the occurrence of important interferences, which may have an impact on age determinations. These effects are produced by humic acids, sunlight exposure, grinding, instability of paramagnetic centres, measurement conditions, and possible pretreatment of the sample. The consequence of these interferences are discussed.
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