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Article: Predictions of nitrate diffusion in sediment using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry

TitlePredictions of nitrate diffusion in sediment using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry
Authors
Issue Date2008
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2008, v. 42 n. 4-5, p. 903-908 How to Cite?
AbstractUsing a novel and simple method based on horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry, the effective diffusion coefficient, De, of nitrate in a contaminated anthropogenic sediment was estimated as 7.34×10-6 cm2 s-1. This method, which requires as little as 1 mL of sediment sample, was able to measure the De of a chemical species with a reproducibility of ±3% in about 5 h. Based on this De and a pre-determined nitrate reduction rate, the profiles of nitrate concentration in two sediment columns were satisfactorily predicted from a mathematical model. Results showed that the profile in this aged sediment depended mainly on the diffusion of nitrate and, only to a much lesser degree, the rate of nitrate reduction. Measurements in 55 anthropogenic sediment samples collected from five locations and various depths of a contaminated site further showed that the De of nitrate increased linearly with the water content of the sediment, but decreased with the sediment density. The technique demonstrated in this study shall be applicable for the risk assessment of toxic pollutants in contaminated sediments, and for planning the spatial and time intervals of nitrate injection strategy in bioremediation. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/71362
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFang, HHPen_HK
dc.contributor.authorZhang, Men_HK
dc.contributor.authorZhang, Ten_HK
dc.contributor.authorChen, Jen_HK
dc.date.accessioned2010-09-06T06:31:18Z-
dc.date.available2010-09-06T06:31:18Z-
dc.date.issued2008en_HK
dc.identifier.citationWater Research, 2008, v. 42 n. 4-5, p. 903-908en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71362-
dc.description.abstractUsing a novel and simple method based on horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometry, the effective diffusion coefficient, De, of nitrate in a contaminated anthropogenic sediment was estimated as 7.34×10-6 cm2 s-1. This method, which requires as little as 1 mL of sediment sample, was able to measure the De of a chemical species with a reproducibility of ±3% in about 5 h. Based on this De and a pre-determined nitrate reduction rate, the profiles of nitrate concentration in two sediment columns were satisfactorily predicted from a mathematical model. Results showed that the profile in this aged sediment depended mainly on the diffusion of nitrate and, only to a much lesser degree, the rate of nitrate reduction. Measurements in 55 anthropogenic sediment samples collected from five locations and various depths of a contaminated site further showed that the De of nitrate increased linearly with the water content of the sediment, but decreased with the sediment density. The technique demonstrated in this study shall be applicable for the risk assessment of toxic pollutants in contaminated sediments, and for planning the spatial and time intervals of nitrate injection strategy in bioremediation. © 2007 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watresen_HK
dc.relation.ispartofWater Researchen_HK
dc.subject.meshDiffusionen_HK
dc.subject.meshGeologic Sediments - analysisen_HK
dc.subject.meshModels, Theoreticalen_HK
dc.subject.meshNitrates - analysis - metabolismen_HK
dc.subject.meshOxidation-Reductionen_HK
dc.subject.meshSpectroscopy, Fourier Transform Infrareden_HK
dc.subject.meshWater Pollutants, Chemical - analysis - metabolismen_HK
dc.titlePredictions of nitrate diffusion in sediment using horizontal attenuated total reflection (HATR) by Fourier transform infrared (FTIR) spectrometryen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=42&spage=903&epage=908&date=2008&atitle=Predictions+of+nitrate+diffusion+in+sediment+using+horizontal+attenuated+total+reflection+(HATR)+by+Fourier+transform+infrared+(FTIR)+spectrometryen_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.emailZhang, T:zhangt@hkucc.hku.hken_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.identifier.authorityZhang, T=rp00211en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.watres.2007.08.038en_HK
dc.identifier.pmid17915286-
dc.identifier.scopuseid_2-s2.0-38949083490en_HK
dc.identifier.hkuros148380en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-38949083490&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume42en_HK
dc.identifier.issue4-5en_HK
dc.identifier.spage903en_HK
dc.identifier.epage908en_HK
dc.identifier.isiWOS:000254111000008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK
dc.identifier.scopusauthoridZhang, M=23491164000en_HK
dc.identifier.scopusauthoridZhang, T=24470677400en_HK
dc.identifier.scopusauthoridChen, J=12763271400en_HK

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