Trace Elements Determination: Report On Two Interlaboratory Exercises [determinação De Elementos-traço: Relatório De Dois Exercícios Interlaboratoriais]

Results of two intercomparison exercises are reported. In the first one, the participants were asked to determine Cd, Cu, Pb and Zn, at the sub μg mL-1 level, in an acidified aqueous solution. In the second one, the participants were asked to determine mercury (total) in two homogeneous biological samples, hair and fish. The exercises were considered satisfactory and few reported results were discharged (3s criteria).206644646Van Loon, J.C., (1985) Selected Methods of Trace Metal Analysis: Biological and Environmental Samples, , John Wiley and Sons, N. YorkIyengar, G.V., (1989) Elemental Analysis of Biological Systems, , CRC Press, Inc.Boca Raton, FloridaTaylor, J.K., (1987) Quality Assurance of Chemical Measurements, , Lewis Publishers Inc/CRC PressBoca Raton, FloridaRogers, L.B., (1986) J. Chem. Educ., 63, p. 3De Bièvre, P., (1993) Quim. Nova, 16, p. 491Topping, G., (1982) Cooperative Report 11, , International Council for the Exploration of the Sea, CopenhagenMohl, C., Groebecker, K.H., Stoeppler, M., Fresenius, Z., (1987) Anal. Chem., 328, p. 413M'Baku, S.B., Parr, R.M., (1982) J. Radioanal. Chem., 69, p. 171Bortoli, A., Muntau, H., Taccani, F., (1990) Boll. Chim. Igien., 41, p. 1Okamoto, K., Morita, M., Quan, H., Uehiro, T., Fuwa, K., (1985) Clin. Chem., 31, p. 1592Aston, S.R., Oregioni, B., Veglia, A., (1987) Atom. Absorp. Newslet., 8, p. 155Moreira, M.F.R., Curtius, A.J., Campos, R.C., (1995) Analyst, 120, p. 94