Artículos de revistas
On-line Microwave Slurry Sample Digestion Using Flow Systems For The Spectrophotometric Determination Of Iron In Seafood
Registro en:
Analyst. , v. 123, n. 5, p. 1023 - 1028, 1998.
32654
10.1039/a708060c
2-s2.0-0031842038
Autor
Pereira Fo E.R.
Rohwedder J.J.R.
Arruda M.A.Z.
Institución
Resumen
A method for the spectrophotometric determination of iron in seafood slurry samples based on microwave assisted digestion has been developed. The stabilized slurry (200 μl) is introduced in a flow system and transported by an air carrier stream to a digestion coil positioned inside the microwave oven. After the digestion step (10 or 20 min at maximum power) the flushing solution is collected in a calibrated flask. A 200 μl-digested sample is introduced in a flow injection system and the iron determined at 512 nm with 1,10-phenanthroline. The proposed method features a linear range from 50 to 200 μg l-1 (r > 0.999) presenting a precision, expressed as RSD, of 3.7% (n = 10) for repeatability and 5.0% (n = 30) for reproducibility. Accuracy was assessed by using Standard and Certified Reference Materials. 123 5 1023 1028 Kingston, H.M., Jassie, L.B., (1988) Introduction to Microwave Sample Preparation - Theory and Practice, p. 263. , American Chemical Society, Washington, DC Valcárcel, M., Luque De Castro, M.D., Tena, M.Y., (1993) Extracción con Fluidos Supercríticos en el Processo Analítico, p. 469. , Editorial Reverté S. A., Barcelona Burguera, M., Burguera, J.L., (1996) Quím. Anal., 15, p. 112 De La Guardia, M., Salvador, A., Burguera, J.L., Burguera, M.J., (1988) Flow Injection Anal., 5, p. 121 Arruda, M.A.Z., Santelli, R.E., (1997) Quím. Nova, 20, p. 638 De La Guardia, M., Carbonell, V., Morales-Rubio, A., Salvador, A., (1993) Talanta, 40, p. 1609 Burguera, J.L., Burguera, M., Brunetto, M.R., (1993) At. Spectrosc., 14, p. 90 Burguera, M., Burguera, J.L., Alarcón, O.M., (1996) Anal. Chim. Acta, 179, p. 351 Burguera, M., Burguera, J.L., Alarcón, O.M., (1988) Anal. Chim. Acta, 214, p. 421 Bryce, D.W., Izquierdo, A., Luque De Castro, M.D., (1996) Anal. Chim. Acta, 324, p. 69 Guo, T., Baasner, J., (1993) Talanta, 40, p. 1927 Hanna, C.P., McIntosh, S.A., (1995) At. Spectrosc., 16, p. 106 Morales-Rubio, A., Mena, M.L., McLeod, C.W., (1995) Anal. Chim. Acta, 308, p. 364 Cabrera, C., Madrid, Y., Cámara, C., (1994) J. Anal. At. Spectrom., 9, p. 1423 López-Gonzálvez, M.A., Gómez, M.M., Cámara, C., Palacios, M.A., (1994) J. Anal. At. Spectrom., 9, p. 291 Gluodenis Jr., T.J., Tyson, J.F., (1993) J. Anal. At. Spectrom., 8, p. 697 Burguera, M., Burguera, J.L., Rondón, C., Rivas, C., Carrero, P., Gallignani, M., Brunetto, M.R., (1995) J. Anal. At. Spectrom., 10, p. 343 Burguera, J.L., Burguera, M., (1993) J. Anal. At. Spectrom., 8, p. 235 Arruda, M.A.Z., Gallego, M., Valcárcel, M., (1996) J. Anal. At. Spectrom., 11, p. 169 Sooksamiti, P., Geckeis, H., Grudpan, K., (1996) Analyst, 121, p. 1413 Cuesta, A., Todoli, J.L., Canals, A., (1996) Spectrochim. Acta, Part B, 51, p. 1791 Bordera, L., Hernandis, V., Canal, A., Chem, F.A., (1996), 355, p. 112Lafuente, J.M.G., Sánchez, M.L.F., Marchante-Gayón, J.M., Uria, J.E.S., Sanz-Medel, A., (1996) Spectrochim.. Acta Part B, 51, p. 1849 Chakraborty, R., Das, A.K., Cervera, M.L., De La Guardia, M., (1997) Anal. Lett., 30 (2), p. 283 De Almeida, M.D., Leandro, K.C., Da Costa, C.V., Santelli, R.E., De La Guardia, M., (1997) J. Anal. At. Spectrom., 12, p. 1235 Maksimova, I.M., Morosanova, E.I., Kuz'min, N.M., Zolotov, Y.A., (1997) Fresenius' J. Anal. Chem., 357, p. 946 Carlosena, A., Gallego, M., Valcárcel, M., (1997) J. Anal. At. Spectrom., 12, p. 479 Balconi, M.L., Borgarello, M., Ferracioli, R., Realini, F., (1992) Anal. Chim. Acta, 261, p. 295 Schmitt, A., Buttle, L., Uglow, R., Williams, K., Haswell, S., (1993) Anal. Chim. Acta, 284, p. 249 Benson, R.L., McKelvie, I.D., Hart, B.T., Hamilton, I.C., (1994) Anal. Chim. Acta, 291, p. 249 Williams, K.E., Haswell, S.J., Barclay, D.A., Preston, G., (1993) Analyst, 118, p. 245 Bergamin, H.Fo., Reis, B.F., Jacintho, A.O., Zagatto, E.A.G., (1980) Anal. Chim. Acta, 117, p. 81 Mortatti, J., Krug, F.J., Pessenda, L.C.R., Zagatto, E.A.G., Jørgensen, S.S., (1982) Analyst, 107, p. 659 Arruda, M.A.Z., Fostier, A.H., Krug, F.J., (1997) J. Braz. Chem. Soc., 8, p. 39 Fostier, A.H., Ferreira, J.R., (1995) Quím. Nova, 18, p. 425 Miller-Ihli, N.J., (1988) J. Anal. At. Spectrom., 3, p. 73 Bendicho, C., De Loos-Vollebregt, M.T.C., (1991) J. Anal. At. Spectrom., 6, p. 353 Januzzi, G.S.B., Krug, F.J., Arruda, M.A.Z., (1997) J. Anal. At. Spectrom., 12, p. 375 (1987) Analyst, 112, p. 199