Barrier properties of humic acids

abstrakt

angličtina

Humic acids are recognized as a component of natural organic matter that plays a key role in such issues as global warming, carbon cycle in the nature or self-detoxification of soils and sediments. The ability of soils and sediments to reduce the mobility of chemical pollutants or even to immobilize them represents their important natural feature.They affect biological uptake and bioaccumulation of toxic chemicals in plants as well as the pollution of the underground water supplies. In natural systems, humic acids can bind contaminating pollutants and in this way they influence the effectiveness of the regeneration and purification processes in these systems. The reactivity and transport properties of metal ions in humic systems are important for understanding the role of humic substances in both natural systems and human-driven applications.

Barierové vlastnosti huminových látek byly studovány metodou difuzních cel. Huminové kyseliny byly použity jednak ve své nativní podobě a jednak ve formě modifikované methylací s blokovanými karboxylovými skupinami. Jako polutanty byla zvolena barviva methylenová modř a rhodamin 6G. Dále byly použity kovové ionty mědi a niklu. Byly stanoveny difuzní koeficienty

KLUČÁKOVÁ, M.

University of Split

Split

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