About: Adsorption-induced enhancement of the differential pulse polarographic peak of Eu in the presence of natural organic matter: a comparison of different humic substances

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The polarographic signal (maximum peak current) of europium in the differential pulse polarographic (DPP) mode has been found to increase considerably in the presence of humic substances. Different humic substances, such as coal and peat humic acids, soil fulvic acids, and Aldrich humic acids, exhibited very similar effects on the DPP signal of Eu for the cases when the measurements were carried out under the same conditions. The peak enhancement was more pronounced in sodium acetate with a pH value of 7.50 than it was in the acetate buffer with a pH value of 4.65; this effect was related to the reduced complex-forming or metal-binding capability of humic substances at lower pH values. Dependencies of the DPP peak height on the concentration of different humic substances were measured and fitted to a Langmuir-type equation. The polarographic signal (maximum peak current) of europium in the differential pulse polarographic (DPP) mode has been found to increase considerably in the presence of humic substances. Different humic substances, such as coal and peat humic acids, soil fulvic acids, and Aldrich humic acids, exhibited very similar effects on the DPP signal of Eu for the cases when the measurements were carried out under the same conditions. The peak enhancement was more pronounced in sodium acetate with a pH value of 7.50 than it was in the acetate buffer with a pH value of 4.65; this effect was related to the reduced complex-forming or metal-binding capability of humic substances at lower pH values. Dependencies of the DPP peak height on the concentration of different humic substances were measured and fitted to a Langmuir-type equation. (en)
Title	Adsorption-induced enhancement of the differential pulse polarographic peak of Eu in the presence of natural organic matter: a comparison of different humic substances Adsorption-induced enhancement of the differential pulse polarographic peak of Eu in the presence of natural organic matter: a comparison of different humic substances (en)
skos:prefLabel	Adsorption-induced enhancement of the differential pulse polarographic peak of Eu in the presence of natural organic matter: a comparison of different humic substances Adsorption-induced enhancement of the differential pulse polarographic peak of Eu in the presence of natural organic matter: a comparison of different humic substances (en)
skos:notation	RIV/44555601:13520/09:00005104!RIV10-GA0-13520___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA104/08/0758)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Janoš, Pavel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Jana Evangelisty Purkyně v Ústí nad Labem / Fakulta životního prostředí
http://linked.open...dnocenehoVysledku	302026
http://linked.open...ai/riv/idVysledku	RIV/44555601:13520/09:00005104
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	polarography; europium; humic substances; adsorption (en)
http://linked.open.../riv/klicoveSlovo	europium adsorption humic substances polarography
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[9D2CD5D85266]
http://linked.open...i/riv/nazevZdroje	Studia Oecologica
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Non-conventional sorbents in environmental applications
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	3
http://linked.open...iv/tvurceVysledku	Janoš, Pavel Štojdl, Jiří
issn	1802-212X
number of pages	7 (xsd:int)
http://localhost/t...ganizacniJednotka	13520

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