Elementary chemical analysis in leaves infected by fumagina by X-Ray fluorescence technique
| Autor: | P. S. Parreira, Virgílio Franco do Nascimento Filho, P.H.A. Aragão, Maria Sélia Blonski, Carlos Roberto Appoloni |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Brazilian Archives of Biology and Technology, Vol 50, Iss 5, Pp 851-860 (2007) Brazilian Archives of Biology and Technology, Volume: 50, Issue: 5, Pages: 851-860, Published: SEP 2007 Brazilian Archives of Biology and Technology v.50 n.5 2007 Brazilian Archives of Biology and Technology Instituto de Tecnologia do Paraná (Tecpar) instacron:TECPAR |
| ISSN: | 1516-8913 |
| DOI: | 10.1590/s1516-89132007000500013 |
| Popis: | Energy Dispersion X-Ray Fluorescence Technique (EDXRF) was employed to study the effects of the fumagina disease on the elementary chemical composition of the leaves. The experimental set up consisted of a Mo X-ray tube (Ksubµ = 17.44 keV) with Zr filter and a Si (Li) detector. The measurements were performed with the infected and healthy leaves of citric plants. The elements Ti, Mn, Fe, Cu and Zn were quantified, with an average DL of 69, 12, 8, 4 and 4 µg.g-1 respectively. The obtained concentration for Fe varied from 44 to 192 µg.g-1 in healthy leaves and from 363 to 704 µg.g-1 in infected leaves with fumagina .Foi empregada a técnica de fluorescência de raios X por dispersão de energia (EDXRF), para estudar os efeitos da doença fumagina na composição química elementar de folhas. O arranjo experimental consistiu de um tubo de raios X com anodo de Mo (Kµ = 17.44 keV) com filtro de Zr e um detector de Si(Li). As medidas foram realizadas com folhas de plantas cítricas infectadas e sadias. Foram quantificados os elementos Ti, Mn, Fe, Cu e Zn, com um limite de detecção médio de 69, 12, 8, 4 e 4 µg.g-1 respectivamente. As concentrações obtidas para o Fe variaram de 44 a 192 µg.g-1 em amostras de folhas sadias e de 363 a 704 µg g-1 para as folhas infectadas com fumagina. |
| Databáze: | OpenAIRE |
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