| Texto completo | |
| Autor(es): |
Francischini, Danielle da Silva
;
Arruda, Marco Aurelio Zezzi
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ANALYTICAL AND BIOANALYTICAL CHEMISTRY; v. 416, n. 11, p. 12-pg., 2023-11-04. |
| Resumo | |
The aim of this work is to evaluate two quantitative methods, based on the external calibration applied in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analysis, known as (i) analytical curve and (ii) one-point calibration, using the concept of matrix matching to quantify three potentially toxic elements (PTEs) in wood samples. These can biologically register changes in the abiotic environment and be applied to monitoring climate change or environmental toxicity. In this case, standard sample preparation was evaluated to prepare the standard pellets using Pinus taeda species as a matrix-matching concept. Six pellets of P. taeda, with different Pb, Cd, and Ba concentrations, were prepared to build the analytical curve and one-point calibration strategies. The LA-ICP-MS parameters were optimised for 206Pb, 208Pb, 112Cd, 114Cd, 137Ba, and 138Ba isotope analysis in wood samples. The two calibration strategies provided 74-110% analytical recovery from certified reference materials and similar results to those obtained by ICP-MS through the acid digestion of environmental wood samples from Sao Paulo City (Brazil). This demonstrated the applicability of the one-point calibration strategy in quantifying PTEs in wood samples, which could be used with environmental analyses. Differences observed between the Ba isotope results obtained via LA-ICP-MS and ICP-MS quantification were related to sampling by LA-ICP-MS and the ICP-MS sample introduction, as well as to laser matrix and transport effects because of the difference between the wood species evaluated. (AU) | |
| Processo FAPESP: | 17/50085-3 - PIRE: educação e pesquisa em clima das Américas usando os exemplos de anéis de árvores e espeleotemas (PIRE-CREATE) |
| Beneficiário: | Francisco William da Cruz Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 19/24445-8 - EMU concedido no processo 2018/25207-0: espectrômetro de massas com plasma indutivamente acoplado |
| Beneficiário: | Marco Aurelio Zezzi Arruda |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 18/25207-0 - Nanometalômica aplicada ao cultivo da soja para estudar os efeitos das nanopartículas relacionadas a metal |
| Beneficiário: | Marco Aurelio Zezzi Arruda |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 14/50867-3 - INCT 2014: Instituto Nacional de Ciência e Tecnologia de Bioanalítica |
| Beneficiário: | Marco Aurelio Zezzi Arruda |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 20/08543-7 - Um kit de ferramentas especiômicas para investigar alterações mediadas por ácidos graxos na especiação plasmática de zinco e seus efeitos fisiológicos |
| Beneficiário: | Marco Aurelio Zezzi Arruda |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 19/00063-9 - Bioimagem quantitativa de Cd e Pb por meio de ablação a laser e espectrometria de massa com plasma indutivo (LA-ICP-MS) para anéis de árvores e espeleotemas |
| Beneficiário: | Danielle da Silva Francischini |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |