title: Green chromatography determination of fatty acid methyl esters in biodiesel.
abstract: This work proposes a green, simple and rapid chromatographic methodology for separation and determination of a group of 13 fatty acids methyl esters (FAMEs) by using a capillary gas chromatography with a flame ionization detector. The method was successfully applied for the determination of FAMEs in biodiesel samples from commercial and waste cooking oils, synthesized by homogeneous catalysis. Detection and quantification limits were in the μg L(-1) level. Direct injection of sample solution was compared with solid-phase extraction and solid-phase microextraction procedures, giving similar results. The lower analysis time represent considerable improvement compared with other papers. The described methodology is especially suitable for process control applications. The samples analysed showed total contents of FAMEs higher than 96.5%, which verifies the European regulations.
authors: a Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Química , Universidad de La Laguna (ULL) , Avenida Astrofísico Francisco Sánchez, s/n. 38201 La Laguna (Tenerife, Islas Canarias) , España.
authors: Carlos Molina
authors: CM
authors: Mayo
authors: Andrea Brito
authors: AB
authors: Alayón
authors: María Teresa
authors: MT
authors: García Rodríguez
authors: Ana Isabel
authors: AI
authors: Jiménez Abizanda
authors: Francisco Jiménez
authors: FJ
authors: Moreno
mesh_terms: D056804:Biofuels / Q000032:analysis*; D002849:Chromatography, Gas / Q000295:instrumentation / Q000379:methods; D004952:Esters; D005227:Fatty Acids / Q000032:analysis* / Q000737:chemistry; D005410:Flame Ionization / Q000295:instrumentation / Q000379:methods*; D055772:Green Chemistry Technology / Q000295:instrumentation / Q000379:methods*; D008422:Materials Testing / Q000295:instrumentation / Q000379:methods*; D010938:Plant Oils / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D056804:Biofuels; D004952:Esters; D005227:Fatty Acids; D010938:Plant Oils
keywords: biodiesel; fatty acids methyl esters; flame ionization detector; gas chromatography; transesterification