Journal
QUIMICA NOVA
Volume 35, Issue 5, Pages 1011-1015Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422012000500026
Keywords
bioethanol fuel; water content; certified reference material
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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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