ARTÍCULO

First international comparative study of volatile fatty acids in aqueous samples by chromatographic techniques: Evaluating sources of error

Autores: Raposo, F.; Borja, R.; Cacho, J.A.; Mumme, J.; Orupold, K.; Esteves, S.; Noguerol-Arias, J.; Picard, S.; Nielfa, A.; Scherer, P.; Wierinck, I.; Aymerich Soler, Enrique; Cavinato, C.; Rodriguez, D.C.; Garcia-Mancha, N.; Lens, P.N.T.; Fernandez-Cegri, V.
Título de la revista: TRAC-TRENDS IN ANALYTICAL CHEMISTRY
ISSN: 0165-9936
Volumen: 51
Páginas: 127 - 143
Fecha de publicación: 2013
Lugar: WOS
Resumen:
This first international proficiency-testing scheme evaluated the analytical performance and the state of practice in measurement of volatile fatty acids in aqueous samples. Gas chromatography and high-performance liquid chromatography were used by 25 laboratories from 15 different countries. Two reference materials were selected for analysis. The performance of each laboratory was assessed by the internationally-accepted z-score. The overall performance was rather poor. Among the causes of poor analytical performance, human errors and inadequate calibration were probably the major problems encountered. (C) 2013 Elsevier Ltd. All rights reserved.