Heavy metal contents in growth rings of white poplar (Populus alba L.) stem
2006
Vilotic, D.,Faculty of Forestry, Belgrade (Serbia) | Radosevic, G.,Faculty of Forestry, Belgrade (Serbia) | Markovic, D.,Institute of Physics, Belgrade (Serbia) | Novovic, I.,Institute of Physics, Belgrade (Serbia)
This research analyses the lumen of vessels and the contents of heavy metals in white poplar (Populus alba L.) stems at two different sites. The U-shaped DC arc with aerosol supply was applyed for the determination of Fe, Mn and Pb in white poplar growth rings. By optimizing the operation conditions of U-shaped arc plasma and by applying the appropriate computer program, the temporal integration of the recorded signals and the detection limits are lowered. The most appropriate signal integration time was (20s), and the obtained limits of detections for Fe, Mn and Pb were 5.8 ng/ml, 1.6 ng/ml and 2.0 ng/ml, respectively.
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