A Straightforward Method for Copper Determination in Fish Samples via Direct Solid Sample Analysis Line-Source GFAAS
This manuscript describes a simple and reliable method for direct solid sample analysis applied for Cu determination in powdered fish samples using line-source graphite furnace atomic absorption spectrometry. Direct solid sample analysis was performed using a laboratory-made device based on glass capillary tubes for sample mass measurement and transportation to the graphite furnace. The pyrolysis and atomization temperatures were optimized; the optimum conditions were achieved at 1100 °C (pyrolysis) and 2400 °C (atomization). External calibration against aqueous solutions proved to be a reliable alternative for Cu quantification in fish samples with good accuracy. The detection and quantification limits for Cu determination in fish tissues were 0.04 ng g<sup>-1</sup> and 0.12 ng g<sup>-1</sup>, respectively. The proposed method revealed good sensitivity while being simple and reliable.
Authors
- Matheus Fernandes Filgueiras
- Jefferson Santos de Gois (ORCID: https://orcid.org/0000-0002-5762-3407)
- Aderval S. Luna (ORCID: https://orcid.org/0000-0001-6772-0182)
- Michaela Vašinová Galiová
- Marie Novotná
Institutions
- Universidade do Estado do Rio de Janeiro (BR)
- Brno University of Technology (CZ)
Publication Details
- Journal
- ACS Omega
- Published
- 2025-02-28
- DOI
- https://doi.org/10.1021/acsomega.4c08054
- Primary Topic
- Analytical chemistry methods development
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Ministerstvo Školství, Mládeže a Tělovýchovy
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- Universidade do Estado do Rio de Janeiro