How Much Can We Trust Major Element Quantification in Bioapatite Investigation?
| Autor: | Martina Savioli, Daniele Malferrari, Annalisa Ferretti, Luca Medici, Maria Teresa Mascia |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | ACS Omega, Vol 4, Iss 18, Pp 17814-17822 (2019) ACS omega 4 (2019): 17814–17822. doi:10.1021/acsomega.9b02426 info:cnr-pdr/source/autori:Malferrari, Daniele; Ferretti, Annalisa; Mascia, Maria Teresa; Savioli, Martina; Medici, Luca/titolo:How Much Can We Trust Major Element Quantification in Bioapatite Investigation?/doi:10.1021%2Facsomega.9b02426/rivista:ACS omega/anno:2019/pagina_da:17814/pagina_a:17822/intervallo_pagine:17814–17822/volume:4 ACS Omega |
| ISSN: | 2470-1343 |
| DOI: | 10.1021/acsomega.9b02426 |
| Popis: | Bioapatite is probably the key factor in the unreplicated success of vertebrates. Chemical data on bioapatite composition can be achieved on a solid sample by using different analytical tools such as spectroscopic and spectrometric methods. As analytical outputs can be affected by the physical-chemical characteristics of the sample matrix, an internal standard is usually required to correct and validate the results. Bioapatite lattice can accommodate iso- and heterovalent substitutions during life or diagenesis varying its chemical composition through (geological) time. If on the one hand, this makes bioapatite a unique archive of physical and chemical information for both the living cycle and the events occurring after death, on the other, it excludes the identification of a sole internal standard. Here, we propose a method to measure major element concentration with specific care for P, Ca, Mg, Na, K, Si, Al, and Fe, which are the main substituent atoms in bioapatite, through homemade matrix-matched external calibration standards for laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). We tested the method on living and fossil shark teeth, critically comparing the results obtained using other analytical techniques and certified external standards. We demonstrated that matrix-matched calibration in LA-ICPMS is mandatory for obtaining a reliable chemical characterization even if factors such as matrix aggregation variability, diverse presence of volatile compounds, the fossilization footprint, and the instrumental variability can represent further variability parameters. |
| Databáze: | OpenAIRE |
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