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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Elemental mapping of Mg/Ca intensity ratios in marine mollusc shells using laser-induced breakdown spectroscopy

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Autor(es):
Hausmann, N. ; Siozos, P. ; Lemonis, A. ; Colonese, A. C. ; Robson, H. K. ; Anglos, D.
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: Journal of Analytical Atomic Spectrometry; v. 32, n. 8, p. 1467-1472, AUG 1 2017.
Citações Web of Science: 7
Resumo

Records of past environmental conditions in shell carbonate are usually derived from compositional analysis (i.e. trace elements, stable oxygen, carbon, and nitrogen isotopes) performed along the direction of the shell's growth and thus through time. However, compositional variations within isochronous parts of the shell can distort the environmental record and are difficult to assess without extensively mapping the whole shell. Here we apply Laser Induced Breakdown Spectroscopy (LIBS) to efficiently map the elemental change throughout the growth increments of three mollusc shells (Conomurex fasciatus, Ostrea edulis, Anomalocardia flexuosa). We employ an automated LIBS setup to map the Mg/Ca composition of whole shell sections with over 2000 data points per hour. By assessing the spatial variability of Mg/Ca intensity ratios this method has the potential to mitigate distorted results while increasing the resolution of derived palaeoenvironmental information. (AU)

Processo FAPESP: 04/11038-0 - Sambaquis e paisagem: modelando a inter-relação entre processos formativos culturais e naturais no litoral sul de Santa Catarina
Beneficiário:Paulo Antônio Dantas de Blasis
Linha de fomento: Auxílio à Pesquisa - Temático