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Description
| - Byla studována stabilita a transport forem arsenu (As) v půdách ve třech kontaminovaných oblastech v České republice. Celkové obsahy As se pohybovaly od 60 do <18,000 ppm. Pomocí sekvenčních extrakcí (SE) bylo na základě odlišných vazeb a chemických vlastností As odlišeno pět frakcí použitelného As ve studovaných půdách. Obsah nespecificky a slabě vázaného As a As zůstávajícího v pevném zbytku vzorku nepřekročil 10 % totálního obsahu As. Obsah specificky vázaného As se pohyboval v rozmezí 5 až 15 %. Nejvýznamnější podíl As je vázán na frakci hydratovaných Fe oxidů (HFO) ať už amorfních či slabě krystalických (10 – 30 %) a/nebo na dobře krystalických formách (50 – 80 %). As sorpce na HFO površích, zvláště na těch dobře krystalických je nejdůležitější a zároveň značně stabilní vazbou As ve studovaných půdách. Modelové loužící experimenty v systému půda-podzemní voda povrchová voda dokumentují vzrůst mobility As při pH = 7.0. (cs)
- Stability and transport of As species in soils were investigated in three contaminated Central European regions in the Czech Republic. Total As content varied from 60 to <18,000 ppm. Sequential extraction procedure (SEP) enabled to distinguish five main fractions of As in soils based on different chemical and binding properties. Non-specifically and weakly sorbed As, as well as As remained in solid rests of samples did not exceed 10% of total As; specifically bounded As varied from 5 to 15%. The substantial portion of As was bound to hydrated Fe oxides (HFO) in amorphous and poorly-crystalline forms (10–30% of the total As) and/or to a well-crystallized forms of the same phases (50–80%). As sorption on HFO surface, particularly on well-crystallized phases represented the most significant and stable As bond in soils. Model leaching experiments illustrated the increased mobility of As species at pH = 7.0 in the soil–groundwater–surface water systems.
- Stability and transport of As species in soils were investigated in three contaminated Central European regions in the Czech Republic. Total As content varied from 60 to <18,000 ppm. Sequential extraction procedure (SEP) enabled to distinguish five main fractions of As in soils based on different chemical and binding properties. Non-specifically and weakly sorbed As, as well as As remained in solid rests of samples did not exceed 10% of total As; specifically bounded As varied from 5 to 15%. The substantial portion of As was bound to hydrated Fe oxides (HFO) in amorphous and poorly-crystalline forms (10–30% of the total As) and/or to a well-crystallized forms of the same phases (50–80%). As sorption on HFO surface, particularly on well-crystallized phases represented the most significant and stable As bond in soils. Model leaching experiments illustrated the increased mobility of As species at pH = 7.0 in the soil–groundwater–surface water systems. (en)
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Title
| - Stability of Arsenic Species in Soils Contaminated Naturally and in an Anthropogenic Manner
- Stabilita arsenových fází v půdách kontaminovaných přírodně a antropogenním způsobem (cs)
- Stability of Arsenic Species in Soils Contaminated Naturally and in an Anthropogenic Manner (en)
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skos:prefLabel
| - Stability of Arsenic Species in Soils Contaminated Naturally and in an Anthropogenic Manner
- Stabilita arsenových fází v půdách kontaminovaných přírodně a antropogenním způsobem (cs)
- Stability of Arsenic Species in Soils Contaminated Naturally and in an Anthropogenic Manner (en)
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skos:notation
| - RIV/67985831:_____/08:00307238!RIV08-AV0-67985831
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - Z(AV0Z30130516), Z(MSM6046137302)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/67985831:_____/08:00307238
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - arsenic forms; mobility; HFO (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Water, Air and Soil Pollution
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Koloušek, D.
- Filippi, Michal
- Doušová, B.
- Martaus, A.
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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