Evaluation of Brazilian laboratories for determining quality parameters of biofuels

Química Nova

Caliman, Ednéia¹  Sobral, Sidney P.¹  Carneiro, Helena S. P.¹  Costa, Cristiane B.¹  Agência Nacional de Petróleo, Gás Natural e Biocombustíveis, Brasília, Brasil¹  Fraga, Isabel C. S.¹  Rodrigues, Janaína M.¹  Ribeiro, Carla M.¹  Santo Filho, Dalni M. E.¹  Rego, Eliane C. P.¹  Skrobot, Vinícius L.¹  Cunha, Valnei S.¹  Oliveira, Leonardo M.¹  Santana, Elaine B.¹  Pessoa Júnior, Aderson R.¹  Barbosa, Thales P.¹  Gonzaga, Fabiano B.¹  Instituto Nacional de Metrologia, Qualidade e Tecnologia, Duque de Caxias, Brasil¹  Gonçalves, Mary A.¹  Colares, Helenice¹  Leal, Rodrigo V. P.¹  Alves, Márcia V. S.¹  Silva, Viviane F.¹  Siqueira, José R. R.¹ 

关键词: proficiency testing;    biofuels quality parameters;    certified reference values.;   

DOI  :  10.1590/S0100-40422013000300008

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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).

【 授权许可】

Unknown