Certified reference material to water content determination in bioethanol fuel

AUTOR(ES)

Rodrigues, Janaína M., Guimarães, Evelyn F., Sousa, Marcus V. B., Silva, Viviane F., Fraga, Isabel C. S., Souza, Vanderléa, Cunha, Valnei S.

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2012

RESUMO

Bioethanol is a strategic biofuel in Brazil. Thus, a strong metrological basis for its measurements is required to ensure the quality and promote its exportation. Recently, Inmetro certified a reference material for water content in bioethanol. This paper presents the results of these studies. The characterization, homogeneity, short-term stability and long-term stability uncertainty contributions values were 0.00500, 0.0166, 0.0355 and 0.0391 mg g-1, respectively. The certificated value for water content of bioethanol fuel was (3.65 ± 0.11) mg g-1. This CRM is the first and up to now the unique in the world.

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