Evaluation of Brazilian laboratories for determining quality parameters of biofuels

Quimica nova

Caliman, Ednéia¹  Carneiro, Helena S. P.¹  Costa, Cristiane B.¹  Skrobot, Vinícius L.¹  Pessoa Júnior, Aderson R.¹  Colares, Helenice¹  Alves, Márcia V. S.¹  Sobral, Sidney P.²  Fraga, Isabel C. S.²  Rodrigues, Janaína M.²  Ribeiro, Carla M.²  Santo Filho, Dalni M. E.²  Rego, Eliane C. P.²  Oliveira, Leonardo M.²  Cunha, Valnei S.²  Santana, Elaine B.²  Gonzaga, Fabiano B.²  Barbosa, Thales P.²  Gonçalves, Mary A.²  Leal, Rodrigo V. P.²  Silva, Viviane F.²  Siqueira, José R. R.² 

[1] Agência Nacional de Petróleo, Gás Natural e Biocombustíveis, Brasília, Brasil;Instituto Nacional de Metrologia, Qualidade e Tecnologia, Duque de Caxias, Brasil

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】

CC BY