Maria Sélia Blonski
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Carlos Roberto Appoloni
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Paulo Sérgio Parreira
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Pedro Henrique Arruda Aragão
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Virgilio Franco Nascimento Filho
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 (Ksub<FONT FACE=Symbol>µ</FONT> = 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 .
(1)
Landolt-Brnstein physikalisch-chemische Tabellen
(2) The Elements of Qualitative Chemical Analysis (3) A College Text-Book on Quantitative Analysis (4) A Laboratory Manual in Chemistry (5) Elementary Chemical Theory and Calculations