Avaliação de laboratórios brasileiros na determinação de alguns parâmetros de qualidade de biocombustíveis Evaluation of Brazilian laboratories for determining quality parameters of biofuels

This work shows the results of a Proficiency Testing performed by a partnership between INMETRO and ANP. The performance of 49 Brazilian laboratories (using the z-score statistical test) in determining 10 quality parameters of ethanol fuel and biodiesel was evaluated. The certified reference values...

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Bibliographic Details
Published in:Química nova 2013-01, Vol.36 (3), p.393-399
Main Authors: Mary A. Gonçalves, Fabiano B. Gonzaga, Isabel C. S. Fraga, Carla M. Ribeiro, Sidney P. Sobral, Eliane C. P. Rego, Elaine B. Santana, Leonardo M. Oliveira, Viviane F. Silva, Rodrigo V. P. Leal, Dalni M. E. Santo Filho, José R. R. Siqueira, Thales P. Barbosa, Janaína M. Rodrigues, Valnei S. Cunha, Vinícius L. Skrobot, Cristiane B. Costa, Aderson R. Pessoa Júnior, Helena S. P. Carneiro, Helenice Colares, Ednéia Caliman, Márcia V. S. Alves
Format: Article
Language:English
Subjects:
biofuels quality parameters
certified reference values
proficiency testing
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Summary:This work shows the results of a Proficiency Testing performed by a partnership between INMETRO and ANP. The performance of 49 Brazilian laboratories (using the z-score statistical test) in determining 10 quality parameters of ethanol fuel and biodiesel was evaluated. The certified reference values were provided by INMETRO, allowing a more rigorous assessment of the laboratories. For hydrous ethanol, the acidity parameter showed the lowest number of laboratories with satisfactory results (48%), while 85% of the laboratories presented satisfactory results for ethanol content. For biodiesel, the percentage of laboratories with satisfactory results ranged from 46% (kinematic viscosity) to 92% (acid number).
ISSN:0100-4042
1678-7064