20.500.12556/RUL-69659 Ocena poškodovanosti dreves z elektronsko paramagnetno resonanco Mn2+ ionov Damage estimation of trees with electron paramagnetic resonance of Mn (II) ions Izmerili smo EPR spektre Mn2+ v smrekovih iglicah in listih nekaterih listavcev. Pri nepoškodovanih drevesih smo ugotovili značilen sekstet z intenziteto, ki je sorazmerna kolicini Mn v raztopini. V poškodovanih drevesih je ta, mobilna oblika Mn2+, bistveno manjša. Dodatno smo ugotovili, da so EPR spektri vsota dveh ali treh komponent, kar pomeni, da manganovi ioni ali pa njegovi kompleksi niso homogeno razporejeni po listu, ampak so razporejeni v predele z različno koncentracijo Mn2+. S starostjo iglic ostanejo razmerja izmerjenih utežnih deležev komponent zelo podobna. Kolicina celokupnega mangana pa s starostjo raste tako pri zdravih kot tudi poškodovanih drevesih. The EPR spectra of Mn2+ in spruce needles and leaves of broad - leaved trees were measured. A typical Mn2+ hyperfine sextet with intensity proportional to the quantity of Mn in solution was obtained for undamaged trees. A considerably smaller amount of this type of Mn2+ EPR was found Mn2+ for damaged trees. It was also found that EPR spectra are a sum of two or three components representing different local concentration of Mn2+ ions. The weight ratios of the measured components remains similar with age. The amount of total manganese increases with age for undamaged and damaged trees. elektronska paramagnetna resonanca EPR Mn2+ smreka iglica poškodovanost drevesa zdravstveno stanje EPR Mn2+ spruce needles true false false Slovenski jezik Angleški jezik Neznano 2015-07-10 21:33:49 2015-07-10 21:33:49 2024-08-10 03:59:06 0000-00-00 00:00:00 1998 0 0 Str. 97-112 Št. 55 1998 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*18:630*42 0351-3114 387238 Stoli¦Ź,1998,55.pdf Stoli¦Ź,1998,55.pdf 1 19D12FA7B4F9B3CB39E89F6E47202A27 c800fdc99f3d16a5de0efa7cd7b23ea2a9a1ca8b63c13cd3eeebd7b5c044f9d7 69c5d840-a1b3-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=100860 Biotehniška fakulteta 0 0 0