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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F05%3A00030986%21RIV10-MSM-14310___
rdf:type
skos:Concept n10:Vysledek
dcterms:description
New data on the dissolution and growth of quartz in acid, nearly neutral and slightly alkaline solutions at ambient conditions are presented. During batch dissolutions, aqueous Si-concentrations increased nonlinearly towards limit values. During parallel growth experiments, however, the high Si-concentrations corresponding to 13-fold supersaturation with respect to quartz did not decreased. To interpret these results, two dynamic models (1) a reaction model and (2) a surface-complexation model, were derived. Both models were focused on (a) reversible dissolution/growth of bulk quartz and b) irreversible dissolution of disturbed quartz (weakly bounded Si-atoms) on new surface. New data on the dissolution and growth of quartz in acid, nearly neutral and slightly alkaline solutions at ambient conditions are presented. During batch dissolutions, aqueous Si-concentrations increased nonlinearly towards limit values. During parallel growth experiments, however, the high Si-concentrations corresponding to 13-fold supersaturation with respect to quartz did not decreased. To interpret these results, two dynamic models (1) a reaction model and (2) a surface-complexation model, were derived. Both models were focused on (a) reversible dissolution/growth of bulk quartz and b) irreversible dissolution of disturbed quartz (weakly bounded Si-atoms) on new surface.
dcterms:title
Total dynamics of quartz-water system at ambient conditions Total dynamics of quartz-water system at ambient conditions
skos:prefLabel
Total dynamics of quartz-water system at ambient conditions Total dynamics of quartz-water system at ambient conditions
skos:notation
RIV/00216224:14310/05:00030986!RIV10-MSM-14310___
n3:aktivita
n13:Z n13:S
n3:aktivity
S, Z(MSM0021622412)
n3:cisloPeriodika
11
n3:dodaniDat
n12:2010
n3:domaciTvurceVysledku
n7:6717373
n3:druhVysledku
n15:J
n3:duvernostUdaju
n9:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
546941
n3:idVysledku
RIV/00216224:14310/05:00030986
n3:jazykVysledku
n17:eng
n3:klicovaSlova
complex; dissolution; dynamics; flux; growth; modeling; PHREEQC; quartz; surface
n3:klicoveSlovo
n11:dissolution n11:complex n11:growth n11:flux n11:PHREEQC n11:dynamics n11:surface n11:modeling n11:quartz
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[B43127D41A72]
n3:nazevZdroje
Aquatic Geochemistry
n3:obor
n18:DD
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
1
n3:rokUplatneniVysledku
n12:2005
n3:svazekPeriodika
2005
n3:tvurceVysledku
Faimon, Jiří
n3:wos
000228868000002
n3:zamer
n8:MSM0021622412
s:issn
1380-6165
s:numberOfPages
33
n16:organizacniJednotka
14310