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Statements

Subject Item
n2:RIV%2F00216305%3A26310%2F14%3APU110729%21RIV15-MSM-26310___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
The complexation kinetics of Co(II), Cu(II), and Ni(II) ions with humic acids is studied in this work. Humic acids were used in three different forms: solid powder, colloidal solution (sol), and hydrogel. The pseudosecond- order rate equation was used as the basic equation for the mathematical description of the complexation kinetics in the humic systems. Three different methods were applied to monitor the concentration changes in studied systems (conductometry, potentiometry, and UV/VIS spectroscopy). The double-linear fit was obtained in all cases. This is an indication that there are two principal types of metal binding sites in humic acids in all used forms. The strongest active centers are probably occupied in the first step, and slower interactions with less preferable binding sites and the rearrangement of formed complex follow in the second step. The values of rate constants were much higher for the first step in all cases. The highest values were obtained for humic sol and Cu(II) ions and the The complexation kinetics of Co(II), Cu(II), and Ni(II) ions with humic acids is studied in this work. Humic acids were used in three different forms: solid powder, colloidal solution (sol), and hydrogel. The pseudosecond- order rate equation was used as the basic equation for the mathematical description of the complexation kinetics in the humic systems. Three different methods were applied to monitor the concentration changes in studied systems (conductometry, potentiometry, and UV/VIS spectroscopy). The double-linear fit was obtained in all cases. This is an indication that there are two principal types of metal binding sites in humic acids in all used forms. The strongest active centers are probably occupied in the first step, and slower interactions with less preferable binding sites and the rearrangement of formed complex follow in the second step. The values of rate constants were much higher for the first step in all cases. The highest values were obtained for humic sol and Cu(II) ions and the
dcterms:title
Complexation of metal ions with solid humic acids, humic colloidal solutions, and humic hydrogel. Complexation of metal ions with solid humic acids, humic colloidal solutions, and humic hydrogel.
skos:prefLabel
Complexation of metal ions with solid humic acids, humic colloidal solutions, and humic hydrogel. Complexation of metal ions with solid humic acids, humic colloidal solutions, and humic hydrogel.
skos:notation
RIV/00216305:26310/14:PU110729!RIV15-MSM-26310___
n4:aktivita
n16:P
n4:aktivity
P(LO1211)
n4:cisloPeriodika
11
n4:dodaniDat
n8:2015
n4:domaciTvurceVysledku
n11:6328601
n4:druhVysledku
n14:J
n4:duvernostUdaju
n12:S
n4:entitaPredkladatele
n9:predkladatel
n4:idSjednocenehoVysledku
8379
n4:idVysledku
RIV/00216305:26310/14:PU110729
n4:jazykVysledku
n6:eng
n4:klicovaSlova
colloid, complexation, humic acids, kinetics, metal ions
n4:klicoveSlovo
n5:colloid n5:kinetics n5:metal%20ions n5:humic%20acids n5:complexation
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[C769AD3792D7]
n4:nazevZdroje
ENVIRONMENTAL ENGINEERING SCIENCE
n4:obor
n17:CF
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
1
n4:projekt
n10:LO1211
n4:rokUplatneniVysledku
n8:2014
n4:svazekPeriodika
31
n4:tvurceVysledku
Klučáková, Martina
s:issn
1092-8758
s:numberOfPages
9
n7:doi
10.1089/ees.2013.0487
n19:organizacniJednotka
26310