Open AccessDistribution of Mineral Substances in Different Wood Tissues of European Larch (Larix decidua Mill.)
Author(s) -
Janja Zule,
Jožica Dolenc
Publication year - 2012
Publication title -
drvna industrija
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.287
H-Index - 19
eISSN - 1847-1153
pISSN - 0012-6772
DOI - 10.5552/drind.2012.1117
Subject(s) - larch , mineral , decidua , mill , distribution (mathematics) , pulp and paper industry , botany , biology , chemistry , ecology , mathematics , pregnancy , engineering , mathematical analysis , fetus , genetics , placenta
Typical wood tissues, such as stemwood, bark, branches, twigs and needles, of two very old European larch trees (Larix decidua Mill.) were examined for the content of macro and micro mineral substances. Elemental analysis, atomic absorption spectrophotometry (AAS) and ultraviolet/visible (UV/VIS) techniques were applied for quantitative determination of individual elements. The results indicated that both trees had almost identical mineral content. The highest contents of macro elements N, P, S, K and Mg as well as micro elements Ni, Fe, Al and Co were measured in needles, while Ca, Mn and Zn prevailed in bark. Concentrations of substances were the lowest in stemwood. Comparison with similar studies of foliar mineral distribution proved that both trees had good nutrient status, which corresponded to their condition.U radu se prikazuju rezultati istraživanja sadržaja mikromineralnih i makromineralnih elemenata u tipičnomu drvnom tkivu dvaju stabala vrlo starih europskih ariša (Larix decidua Mill.) kao što su stablo (deblo), kora, grane, grančice i iglice. Za kvantitativno određivanje pojedinačnih elemenata primijenjene su elementarne analize, atomska apsorpcijska spektrofotometrija (AAS) i ultraljubičasta/vidljiva (UV/VIS) analitička tehnika. Prema dobivenim rezultatima, svi su usporedivi uzorci oba drva imali praktički jednak mineralni sastav. Najveći sadržaj makroelemenata N, P, S, K i Mg, kao i mikroelemenata Ni, Fe, Al i Co, zastupljen je u iglicama, no Ca, Mn i Zn prevladavali su u kori. Najniže koncentracije mineralnih tvari izmjerene su u drvu stabla (debla). U usporedbi sa sličnim studijama raspodjele mineralnih tvari u iglicama, dokazano je da svi uzorci drva imaju primjeren sadržaj tih tvari, što odgovara njihovu zdravom stanju