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Article: Effects of available nitrogen on the uptake and assimilation of ferrocyanide and ferricyanide complexes in weeping willows

TitleEffects of available nitrogen on the uptake and assimilation of ferrocyanide and ferricyanide complexes in weeping willows
Authors
KeywordsAssimilation
Cyanide
Ferricyanide
Ferrocyanide
Nitrogen
Phytoremediation
Uptake
Willows
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmat
Citation
Journal Of Hazardous Materials, 2008, v. 156 n. 1-3, p. 300-307 How to Cite?
AbstractThe effects of different levels of external nitrogen on the uptake, distribution and assimilation of iron cyanide complexes were investigated. Pre-rooted weeping willows (Salix babylonica L.) were grown in a hydroponic solution with or without nitrogen and amended with potassium ferrocyanide or potassium ferricyanide at 25.0 ± 0.5 °C for 144 h. Faster uptake of ferrocyanide than ferricyanide was observed in willows grown in the deionized water. Negligible difference in the removal rate between the two chemicals was detected for willows grown in nutrient soultions with or without amendment of nitrogen. The volatilization of ferro- and ferricyanide due to transpiration through plant aerial tissues was below detection level. Less then 20% of the ferrocyanide or ferricyanide taken up from the N-free nutrient solution was recovered in the biomass and majority was accumulated in the roots. In contrast, less than 9.0% of both iron cyanide compelxes taken up was detected in the plant materials of willows grwon in the N-containing nutrient solution and roots were the major sites for accumulation of both chemicals. A large fraction of the ferro- and ferricyanide taken up from the hydroponic solution was assimilated during the transport within plant materials. Willows grown in the N-containing nutrient solution showed a higher assimilation potential for both chemical forms than those grown in the N-free nutrient solution in general. The information collectively suggests that uptake and assimilation mechanisms for ferro- and ferricyanide are largely different in willows; the strength of external nitrogen had a negligible effect on the uptake of both chemicals, while assimilation of ferro- and ferricyanide in plant materials was strongly related to the presence of easily available nitrogen in the hydroponic solution. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/60639
ISSN
2015 Impact Factor: 4.836
2015 SCImago Journal Rankings: 1.692
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYu, XZen_HK
dc.contributor.authorGu, JDen_HK
dc.date.accessioned2010-05-31T04:15:38Z-
dc.date.available2010-05-31T04:15:38Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Hazardous Materials, 2008, v. 156 n. 1-3, p. 300-307en_HK
dc.identifier.issn0304-3894en_HK
dc.identifier.urihttp://hdl.handle.net/10722/60639-
dc.description.abstractThe effects of different levels of external nitrogen on the uptake, distribution and assimilation of iron cyanide complexes were investigated. Pre-rooted weeping willows (Salix babylonica L.) were grown in a hydroponic solution with or without nitrogen and amended with potassium ferrocyanide or potassium ferricyanide at 25.0 ± 0.5 °C for 144 h. Faster uptake of ferrocyanide than ferricyanide was observed in willows grown in the deionized water. Negligible difference in the removal rate between the two chemicals was detected for willows grown in nutrient soultions with or without amendment of nitrogen. The volatilization of ferro- and ferricyanide due to transpiration through plant aerial tissues was below detection level. Less then 20% of the ferrocyanide or ferricyanide taken up from the N-free nutrient solution was recovered in the biomass and majority was accumulated in the roots. In contrast, less than 9.0% of both iron cyanide compelxes taken up was detected in the plant materials of willows grwon in the N-containing nutrient solution and roots were the major sites for accumulation of both chemicals. A large fraction of the ferro- and ferricyanide taken up from the hydroponic solution was assimilated during the transport within plant materials. Willows grown in the N-containing nutrient solution showed a higher assimilation potential for both chemical forms than those grown in the N-free nutrient solution in general. The information collectively suggests that uptake and assimilation mechanisms for ferro- and ferricyanide are largely different in willows; the strength of external nitrogen had a negligible effect on the uptake of both chemicals, while assimilation of ferro- and ferricyanide in plant materials was strongly related to the presence of easily available nitrogen in the hydroponic solution. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmaten_HK
dc.relation.ispartofJournal of Hazardous Materialsen_HK
dc.subjectAssimilationen_HK
dc.subjectCyanideen_HK
dc.subjectFerricyanideen_HK
dc.subjectFerrocyanideen_HK
dc.subjectNitrogenen_HK
dc.subjectPhytoremediationen_HK
dc.subjectUptakeen_HK
dc.subjectWillowsen_HK
dc.subject.meshFerricyanides - metabolism-
dc.subject.meshFerrocyanides - metabolism-
dc.subject.meshNitrogen - metabolism-
dc.subject.meshSalix - metabolism - physiology-
dc.subject.meshVolatilization-
dc.titleEffects of available nitrogen on the uptake and assimilation of ferrocyanide and ferricyanide complexes in weeping willowsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0304-3894&volume=156&spage=300&epage=307&date=2008&atitle=Effects+of+available+nitrogen+on+the+uptake+and+assimilation+of+ferrocyanide+and+ferricyanide+complexes+in+weeping+willowsen_HK
dc.identifier.emailGu, JD: jdgu@hkucc.hku.hken_HK
dc.identifier.authorityGu, JD=rp00701en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jhazmat.2007.12.020en_HK
dc.identifier.pmid18249493en_HK
dc.identifier.scopuseid_2-s2.0-44649182148en_HK
dc.identifier.hkuros160872en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-44649182148&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume156en_HK
dc.identifier.issue1-3en_HK
dc.identifier.spage300en_HK
dc.identifier.epage307en_HK
dc.identifier.isiWOS:000257722000039-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridYu, XZ=24449490500en_HK
dc.identifier.scopusauthoridGu, JD=7403129601en_HK

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