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Caracterização detalhada de material de referência certificado de carvão brasileiro

2013; Brazilian Chemical Society; Volume: 36; Issue: 6 Linguagem: Inglês

10.1590/s0100-40422013000600020

1678-7064

Vera L. V. Fallavena, Cristiane S. de Abreu, Taísi D. Inácio, Marçal Pires, Carla M. N. Azevedo, I. D. Fernandes, Lizete S. Ferret, M. Rosa Martı́nez-Tarazona,

Pesticide Residue Analysis and Safety

BRAZILIAN COAL.The use and characterization of the first Certified Reference Material (CRM) of Brazilian coal for analytical quality control are presented.All results were determined within the limits of repeatability and reproducibility allowed under the standards.Notable among the characterization parameters was the mineral matter content (45.39%) obtained by an alternative procedure showing a low relative error (-2.1%) compared to the standard technique (low ashing temperature).The possible expanded application of this CRM application in national laboratories, beyond the certificated and reference parameters, has advantages such as lower cost and easy availability, but round robin tests must be performed.