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Due to the ease and low cost of implementation, a commonly used method of determining the humus content in soils is the loss-on-ignition (LOI) method. Several regression equations and transformation factors are reported for LOI conversion to soil organic matter (SOM) or total organic carbon (TOC) content. The vast majority of the conversion factors have been developed for surface horizons of lowland...
Oznaczono formy żelaza i cynku w glebach nawadnianych ściekami komunalnymi na polach irygowanych Wrocław — Osobowice metodą ekstrakcji sekwencyjnej według Zeiena i Bruemmera. Stwierdzono, że żelazo występuje głównie w krystalicznych formach tlenków i wodorotlenków oraz w połączeniach organicznych. Cynk związany jest w tlenkach żelaza i połączeniach organicznych, ale nawet do 47% całkowitej zawartości...
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