File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Recovery of heavy metals from acid digestion of an estuarine sediment and concentration profiles of sediment cores from Hebe Haven and Ngau Mei Hoi, Hong Kong

TitleRecovery of heavy metals from acid digestion of an estuarine sediment and concentration profiles of sediment cores from Hebe Haven and Ngau Mei Hoi, Hong Kong
Authors
KeywordsAcid Digestion
Concentration Profile
Heavy Metals
Recovery. Microwave
Sediment Core
Issue Date1992
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/03067319.asp
Citation
International Journal Of Environmental Analytical Chemistry, 1992, v. 46 n. 4, p. 277-291 How to Cite?
AbstractThe recovery efficiencies of Cd, Cr, Cu, Fe, Ni, Pb and Zn during acid digestion by different acid mixtures and by block heater and microwave heating were determined for an estuarine sediment sample. For block heater heating. the aqua regia mixture was found the most powerful digestion agent, giving a high yield of 112% for Fe and a poorer yield of 83% for Pb. Compared to block heater heating. HNO3, digestion by a domestic microwave oven gave a lower yield for Cr, Cu, Fe and Ni. The digestion time of 3-6 min was possibly not sufficient to cause a complete release of the heavy metals. The recoveries for a heating time of 3.8 min and under 'High Heat' were determined as follows: Cd, 99%; Cr, 55%; Cu, 95%; Fe,87%: Ni. 76%; Pb. 75%; Zn, 88%. Microwave digestion using HNO, was used to determine the concentration of the above metals in two sediment cores from Hebe Haven and Ngau Mei Hoi, Hong Kong. Hebe Haven, which is close to a suburban area with some dyeing factories, has its surficial sediment enriched in Cd, Cr. Cu, Pb and Zn, with mean surficial concentrations of 0.259, 65.0. 30.3, 52.4 and 115 mg kg-I, respectively. The corresponding enrichment factors (EFs) were calculated as 3.6, 2.0, 3.0, 1.4 and 1.6. Ngau Mei Hoi is further away from the urbanized coast and only Cd, Cu and Pb are slightly enriched in the surficial sediment, with EFs of 1.1, 1.3 and 1.4, respectively. © 1992 Gordon and Breach Science Publishers S.A.
Persistent Identifierhttp://hdl.handle.net/10722/167399
ISSN
2015 Impact Factor: 1.411
2015 SCImago Journal Rankings: 0.425
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLo, CKen_US
dc.contributor.authorFung, YSen_US
dc.date.accessioned2012-10-08T03:06:28Z-
dc.date.available2012-10-08T03:06:28Z-
dc.date.issued1992en_US
dc.identifier.citationInternational Journal Of Environmental Analytical Chemistry, 1992, v. 46 n. 4, p. 277-291en_US
dc.identifier.issn0306-7319en_US
dc.identifier.urihttp://hdl.handle.net/10722/167399-
dc.description.abstractThe recovery efficiencies of Cd, Cr, Cu, Fe, Ni, Pb and Zn during acid digestion by different acid mixtures and by block heater and microwave heating were determined for an estuarine sediment sample. For block heater heating. the aqua regia mixture was found the most powerful digestion agent, giving a high yield of 112% for Fe and a poorer yield of 83% for Pb. Compared to block heater heating. HNO3, digestion by a domestic microwave oven gave a lower yield for Cr, Cu, Fe and Ni. The digestion time of 3-6 min was possibly not sufficient to cause a complete release of the heavy metals. The recoveries for a heating time of 3.8 min and under 'High Heat' were determined as follows: Cd, 99%; Cr, 55%; Cu, 95%; Fe,87%: Ni. 76%; Pb. 75%; Zn, 88%. Microwave digestion using HNO, was used to determine the concentration of the above metals in two sediment cores from Hebe Haven and Ngau Mei Hoi, Hong Kong. Hebe Haven, which is close to a suburban area with some dyeing factories, has its surficial sediment enriched in Cd, Cr. Cu, Pb and Zn, with mean surficial concentrations of 0.259, 65.0. 30.3, 52.4 and 115 mg kg-I, respectively. The corresponding enrichment factors (EFs) were calculated as 3.6, 2.0, 3.0, 1.4 and 1.6. Ngau Mei Hoi is further away from the urbanized coast and only Cd, Cu and Pb are slightly enriched in the surficial sediment, with EFs of 1.1, 1.3 and 1.4, respectively. © 1992 Gordon and Breach Science Publishers S.A.en_US
dc.languageengen_US
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/03067319.aspen_US
dc.relation.ispartofInternational Journal of Environmental Analytical Chemistryen_US
dc.subjectAcid Digestionen_US
dc.subjectConcentration Profileen_US
dc.subjectHeavy Metalsen_US
dc.subjectRecovery. Microwaveen_US
dc.subjectSediment Coreen_US
dc.titleRecovery of heavy metals from acid digestion of an estuarine sediment and concentration profiles of sediment cores from Hebe Haven and Ngau Mei Hoi, Hong Kongen_US
dc.typeArticleen_US
dc.identifier.emailFung, YS:ysfung@hku.hken_US
dc.identifier.authorityFung, YS=rp00697en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1080/03067319208032568en_US
dc.identifier.scopuseid_2-s2.0-0011186296en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0011186296&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume46en_US
dc.identifier.issue4en_US
dc.identifier.spage277en_US
dc.identifier.epage291en_US
dc.identifier.isiWOS:A1992JA06400005-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLo, CK=16162440300en_US
dc.identifier.scopusauthoridFung, YS=13309754700en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats