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Article: Magnetic signature of heavy metals pollution of sediments: Case study from the East Lake in Wuhan, China

TitleMagnetic signature of heavy metals pollution of sediments: Case study from the East Lake in Wuhan, China
Authors
KeywordsEast Lake
Heavy metals
Lake sediments
Magnetic susceptibility
Pollution
Wuhan city
Issue Date2007
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00254/index.htm
Citation
Environmental Geology, 2007, v. 52 n. 8, p. 1639-1650 How to Cite?
AbstractDetailed magnetic measurements and geochemical analyses were performed on 114 sediment samples collected from the East Lake, Wuhan city, China, to establish a possible link between the enhanced concentration of anthropogenic magnetic particles and heavy metals with known sources. Relatively higher magnetic susceptibility values (mass-specific, χ, >150 × 10 -8 m3 kg-1) were observed for samples near the pollution sources: e.g. the Wuhan Iron and Steel Company (WISC), the Qingshan Thermal Power Plant (QTPP), the banks (driveways) of the lake and near the sightseeing route of yachts on the lake. Moreover, χ is positively correlated to the concentration of Pb (correlation coefficient r = 0.682), but negatively or weakly correlated with both Zn and Cu. In contrast, anhysteretic remanent magnetization (ARM) is significantly correlated with these major heavy metals (r = 0.645 for Zn-ARM, 0.699 for Pb-ARM and 0.841 for Cu-ARM, respectively), which indicate that ARM serves a better indicator for the pollution of heavy metals in this lake. Thermomagnetic analysis combined with magnetic hysteresis measurements revealed that magnetites in the pseudo-single-domain/multidomain grain-size regions are dominant. Scanning electron microscopy and energy dispersive X-ray examinations of the magnetic extracts showed that these Fe-rich particles have different morphologies: orange-peel structure, hollow structure with adhered smaller particles, Zr-rich melted-like irregular particles, pear-shaped spherules and spherules with slick surfaces. These features are typical for particles produced by anthropogenic activities. Because of the genetic relationship between the environmental setting of the East Lake and the nearby pollution sources, this study suggests that in situ magnetic surveys are sensitive to evaluate the environmental pollution on the lake bottom. © 2007 Springer-Verlag.
Persistent Identifierhttp://hdl.handle.net/10722/73065
ISSN
2011 Impact Factor: 1.127
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYang, Ten_HK
dc.contributor.authorLiu, Qen_HK
dc.contributor.authorChan, Len_HK
dc.contributor.authorLiu, Zen_HK
dc.date.accessioned2010-09-06T06:47:43Z-
dc.date.available2010-09-06T06:47:43Z-
dc.date.issued2007en_HK
dc.identifier.citationEnvironmental Geology, 2007, v. 52 n. 8, p. 1639-1650en_HK
dc.identifier.issn0943-0105en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73065-
dc.description.abstractDetailed magnetic measurements and geochemical analyses were performed on 114 sediment samples collected from the East Lake, Wuhan city, China, to establish a possible link between the enhanced concentration of anthropogenic magnetic particles and heavy metals with known sources. Relatively higher magnetic susceptibility values (mass-specific, χ, >150 × 10 -8 m3 kg-1) were observed for samples near the pollution sources: e.g. the Wuhan Iron and Steel Company (WISC), the Qingshan Thermal Power Plant (QTPP), the banks (driveways) of the lake and near the sightseeing route of yachts on the lake. Moreover, χ is positively correlated to the concentration of Pb (correlation coefficient r = 0.682), but negatively or weakly correlated with both Zn and Cu. In contrast, anhysteretic remanent magnetization (ARM) is significantly correlated with these major heavy metals (r = 0.645 for Zn-ARM, 0.699 for Pb-ARM and 0.841 for Cu-ARM, respectively), which indicate that ARM serves a better indicator for the pollution of heavy metals in this lake. Thermomagnetic analysis combined with magnetic hysteresis measurements revealed that magnetites in the pseudo-single-domain/multidomain grain-size regions are dominant. Scanning electron microscopy and energy dispersive X-ray examinations of the magnetic extracts showed that these Fe-rich particles have different morphologies: orange-peel structure, hollow structure with adhered smaller particles, Zr-rich melted-like irregular particles, pear-shaped spherules and spherules with slick surfaces. These features are typical for particles produced by anthropogenic activities. Because of the genetic relationship between the environmental setting of the East Lake and the nearby pollution sources, this study suggests that in situ magnetic surveys are sensitive to evaluate the environmental pollution on the lake bottom. © 2007 Springer-Verlag.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00254/index.htmen_HK
dc.relation.ispartofEnvironmental Geologyen_HK
dc.subjectEast Lakeen_HK
dc.subjectHeavy metalsen_HK
dc.subjectLake sedimentsen_HK
dc.subjectMagnetic susceptibilityen_HK
dc.subjectPollutionen_HK
dc.subjectWuhan cityen_HK
dc.titleMagnetic signature of heavy metals pollution of sediments: Case study from the East Lake in Wuhan, Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0943-0105&volume=52&spage=1639&epage=1650&date=2007&atitle=Magnetic+Signature+Of+Heavy+Metals+Pollution+Of+Sediments:+Case+Study+From+The+East+Lake+In+Wuhan,+Chinaen_HK
dc.identifier.emailChan, L:chanls@hku.hken_HK
dc.identifier.authorityChan, L=rp00665en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s00254-006-0609-2en_HK
dc.identifier.scopuseid_2-s2.0-34447636199en_HK
dc.identifier.hkuros137775en_HK
dc.identifier.hkuros166788-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34447636199&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume52en_HK
dc.identifier.issue8en_HK
dc.identifier.spage1639en_HK
dc.identifier.epage1650en_HK
dc.identifier.isiWOS:000248135700019-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridYang, T=9840350900en_HK
dc.identifier.scopusauthoridLiu, Q=8729121400en_HK
dc.identifier.scopusauthoridChan, L=7403540528en_HK
dc.identifier.scopusauthoridLiu, Z=8312894400en_HK
dc.identifier.citeulike1658572-

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