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Assessment of Four Inter-Comparison Exercises in Organic Elemental Analysis |
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| Authors: | Alejandro Marcó Ramón Compañó Roser Rubio Pilar Domènech Albert Palangues Miguel Maestro |
| Affiliation: | Departament de Química Analítica, Universitat de Barcelona, Avda. Diagonal, 647, E-08028, Barcelona, Spain, ES Servei de Microanàlisi, CSIC, Jordi Girona, 18-26, E-08034, Barcelona, Spain, ES Geologia Marina, Institut de Ciencies del, Mar, CSIC, Pg. Maritim 37-49, E-08003, Barcelona, Spain, ES Servicios Xerais de Apolo á Investigacion, Campus da Zapateira, s/n, Universidade da Coru?a, E-15071, A Coru?a, Spain, ES |
| Abstract: | Four inter-comparison exercises on organic elemental analysis were carried out between 1997 and 2001 by the Department of Analytical Chemistry of the University of Barcelona, together with the Microanalysis Service and the Institute of the Marine Sciences, which both belong to the CSIC in Barcelona, and the University of A Coru?a. More than sixty laboratories participated in these exercises. Here we describe the design and characteristics of the trials, the samples and the homogeneity tests applied. We report the results obtained for the analysis of carbon, hydrogen, nitrogen, sulphur and oxygen, their statistical analysis, and the most relevant aspects of the technical discussion meetings. Received December 20, 2001; accepted March 18, 2002; published online July 22, 2002 |
| Keywords: | : Organic elemental analysis inter-comparison exercises quality assurance. |
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