mans and animals. By taking advantage of the high spatial resolution offered by the Laser AblationMulti Collector Inductively Coupled Plasma Mass Spectrometry (LA–MC–ICPMS) technique, we investi-gated the87Sr/86Sr intra-tooth variability of two Stephanorhinus hundsheimensis tooth fragments fromthe Middle Pleistocene site of Isernia La Pineta. We detected significant Sr isotopes variability withinthe rhinos tooth enamel (enamel average ±2: sample RH–IS30 0.70951 ± 0.00014; sample RH–IS260.70976 ± 0.00015) with values higher than the “local”87Sr/86Sr ratio (dentine average ±2: sampleRH–IS30 0.70918 ± 0.00013; sample RH–IS26 0.70934 ± 0.00009). This is likely linked to a different waterand food intake with a Sr isotopic signature similar to volcanic soils nearby (Roccamonfina: from 0.7093to 0.7100; Colli Albani: >0.7100) and supports the idea that the Stephanorhinus hundsheimensis speciesmoved around seasonally. The improvement of non-destructive, accurate and precise analytical methodsto decrypt the information hidden within bone and tooth hard tissues of archeological material is crucialto unravel critical questions about evolution, migration and ecology of human and animals. We havesuccessfully took upon this challenge using three matrix-matched reference materials, with variable Srconcentration (c.a. 100–1000 ppm), to correct unresolved interferences arising from LA analyses.© 2016 Elsevier B.V. All rights reserved
In situ high spatial resolution 87Sr/86Sr ratio determination of two Middle Pleistocene (c.a. 580ka) Stephanorhinus hundsheimensis teeth by LA–MC–ICP–MS
PERETTO, Carlo;
2017
Abstract
mans and animals. By taking advantage of the high spatial resolution offered by the Laser AblationMulti Collector Inductively Coupled Plasma Mass Spectrometry (LA–MC–ICPMS) technique, we investi-gated the87Sr/86Sr intra-tooth variability of two Stephanorhinus hundsheimensis tooth fragments fromthe Middle Pleistocene site of Isernia La Pineta. We detected significant Sr isotopes variability withinthe rhinos tooth enamel (enamel average ±2: sample RH–IS30 0.70951 ± 0.00014; sample RH–IS260.70976 ± 0.00015) with values higher than the “local”87Sr/86Sr ratio (dentine average ±2: sampleRH–IS30 0.70918 ± 0.00013; sample RH–IS26 0.70934 ± 0.00009). This is likely linked to a different waterand food intake with a Sr isotopic signature similar to volcanic soils nearby (Roccamonfina: from 0.7093to 0.7100; Colli Albani: >0.7100) and supports the idea that the Stephanorhinus hundsheimensis speciesmoved around seasonally. The improvement of non-destructive, accurate and precise analytical methodsto decrypt the information hidden within bone and tooth hard tissues of archeological material is crucialto unravel critical questions about evolution, migration and ecology of human and animals. We havesuccessfully took upon this challenge using three matrix-matched reference materials, with variable Srconcentration (c.a. 100–1000 ppm), to correct unresolved interferences arising from LA analyses.© 2016 Elsevier B.V. All rights reservedI documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
