Actas de congresos
Accumulation Of Elements In Annual Tree Rings Measured By Synchrotron X-ray Fluorescence Analysis
Registro en:
X-ray Spectrometry. , v. 34, n. 5, p. 411 - 416, 2005.
498246
10.1002/xrs.844
2-s2.0-25444507974
Autor
Vives A.E.S.
Silva R.M.C.
Medeiros J.G.D.S.
Tomazello Filho M.
Barroso R.C.
Zucchi O.L.A.D.
Moreira S.
Institución
Resumen
Wood samples of hardwood (Eucalyptus sp.) and softwood (Pinus sp.) showing typical anatomical features treated with CCA (copper-chromium-arsenic) were analyzed. The distribution and quantification of metals in the sapwood/ heartwood (Eucalyptus sp.) and in the growth-rings (Pinus sp.) were obtained. The samples were scanned in 320 μm steps in the vertical direction. An x-ray beam of ∼320 × 180 urn was used. For excitation of the elements white beam synchrotron radiation was employed and for x-ray detection an Si(Li) semiconductor detector. The x-ray fluorescence intensities for the elements K, Ca, Cr, Mn, Cu, Zn and As were measured. Heterogeneous distribution of the elements was verified across growth-rings indicating irregular efficiency of the preservative distribution inside wood in the softwood samples. As expected, in eucalyptus the presence of the elements Cr, Cu and As was verified in the sapwood region only. Copyright © 2005 John Wiley & Sons, Ltd. 34 5 411 416 Martin, R.R., Shan, T.K., Wong Won, G., Jones, K.W., Feng, H., (2001) X-ray Spectrom., 30, p. 338 Matsunaga, H., Matsumura, J., (2004) ODAK. IAWA J., 25, p. 79 Daniel, G.F., Nilsoon, T., (1988) 19th Annual Meeting: The International Research Group on Wood Preservation, p. 17. , Anals. Madrid: IRG/WP Lepage, E.S., (1986) Manual de Preservação de Madeiras, 2, p. 523. , Instituto de Pesquisas Tecnológicas do Estado de São Paulo: São Paulo Sánches, H.J., Pérez, C.A., Grenón, M., (2000) Nucl. Instrum. Methods B, 170, p. 211 Bernasconi, G., Tajani, A., (1996) Quantitative X-ray Analysis System (QXAS) Software, Package: Documentation Version 1.2, , International Atomic Energy Agency: Vienna Silva, R.M.C., (2002), Doctoral Thesis, CENA/USP, PiracicabaSalvador, M.J., Dias, D.A., Moreira, S., Zucchi, O.L.A.D., (2000) J. Trace Microprobe Technol., 21, p. 377 Taiz, L., Zeiger, E., (2002) Plant Physiology, , Sinauer Associates Inc. Publishers, Sunderland, MA, USA Henshaw, B., (1979) Int. Biodeterior. Bull., 15, p. 66 Helmisaari, H.S., Sitala, T., (1989) Scand. J. For. Res., 4, p. 443 Larsson, C., Helmisaari, H.S., (1998) X-ray Spectrom., 27, p. 133 Punshon, T., Bertsch, P.M., Lanzirotti, A., Mcleod, K., Burger, J., (2003) Environ. Sci. Technol., 37, p. 1766 Harju, L., Lill, J.O., Saarela, K.E., Heselius, S.J., Hernberg, F.J., Lindross, A., (1996) Nucl. Instrum. Methods Phys. Res. B, 109-110, p. 536 Thompson, R., (1991) The Chemistry of Wood Preservation, , Royal Society of Chemistry: Cambridge Panshin, A.J., Zeeuw, C., (1964) Textbook of Wood Technology, 1. , McGraw-Hill: New York Koch, P., (1972) Utilization of the Southern Pines, , USDA: Washington, DC Hillis, W.E., Brown, A.G., (1978) Eucalyptus for Wood Production, , CSIRO Australia: Melbourne Tomazello Filho, M., (1984) IAWA Bull., 5, p. 347 Ferreira, C.A., Bellote, A.F.J., Silva, H.D., (1993) 7° Congresso Florestal Brasileiro e 1° Congresso Florestal Panamericano, p. 227. , Anais. São Paulo SBS/SBEF Hunt, G.M., Garrayy, G.A., (1953) Wood Preservation, , McGraw-Hill: New York