File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Anthropogenic magnetic particles and heavy metals in the road dust: Magnetic identification and its implications

TitleAnthropogenic magnetic particles and heavy metals in the road dust: Magnetic identification and its implications
Authors
KeywordsAtmospheric particulate matter
Environmental magnetism
Heavy metals
Road dust
Issue Date2010
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
Citation
Atmospheric Environment, 2010, v. 44 n. 9, p. 1175-1185 How to Cite?
AbstractMagnetic properties of road dusts in the East Lake area in Wuhan, China, were measured and compared with the results of heavy metal analyses in order to delineate the sources of pollutants. A total of ninety-seven dust samples were collected spatially from four segments with different traffic density and field settings from the roads encircling the lake. Thermomagnetic and hysteresis measurements revealed that the dominant magnetic carrier is coarse-grained magnetite. Correlations between magnetic parameters and element concentrations with traffic density and distances to the industrial region revealed that elements Cu, Ni and Fe mainly originate from vehicle traffic, which is also the major source of coarser magnetic particles (e.g., pseudo-single-domain/multi-domain (PSD/MD) grains), while element Pb and the smaller grains such as single-domain (SD) magnetic particles mainly originate from industrial emissions. The ratio between anhysteretic remanent magnetization and low-field magnetic susceptibility (ARM/χlf) can be employed as an indirect indicator for Cu, Fe and Ni emissions resulting from vehicle traffic. Due to the intermixture of elements from different sources, the element concentrations are not conclusive about the pollution source. A linear correlation between magnetic concentration-related parameters (e.g., ARM and saturation isothermal remanent magnetization, SIRM) and the concentrations of major elements (e.g., Cu, Co, Fe, Mn, Ni and V) suggests that they can be used as a proxy for heavy metal pollution. Road dusts in four segments show different magnetic characteristics, indicating various influxes of anthropogenic magnetic materials from vehicle traffic and industrial plants due to the different traffic loads and field settings. These results suggest that magnetic measurements can serve as an efficient complementary tool for the routinely employed geochemical methods to map the heavy metal pollution and trace the sources of pollutants in the road dust. © 2009 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/72728
ISSN
2015 Impact Factor: 3.459
2015 SCImago Journal Rankings: 1.999
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China40474025
Funding Information:

This study was supported by the National Natural Science Foundation of China (No. 40474025). We express our deep gratitude to Dr. Simo Spassov and an anonymous referee whose comments

References

 

DC FieldValueLanguage
dc.contributor.authorYang, Ten_HK
dc.contributor.authorLiu, Qen_HK
dc.contributor.authorLi, Hen_HK
dc.contributor.authorZeng, Qen_HK
dc.contributor.authorChan, Len_HK
dc.date.accessioned2010-09-06T06:44:33Z-
dc.date.available2010-09-06T06:44:33Z-
dc.date.issued2010en_HK
dc.identifier.citationAtmospheric Environment, 2010, v. 44 n. 9, p. 1175-1185en_HK
dc.identifier.issn1352-2310en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72728-
dc.description.abstractMagnetic properties of road dusts in the East Lake area in Wuhan, China, were measured and compared with the results of heavy metal analyses in order to delineate the sources of pollutants. A total of ninety-seven dust samples were collected spatially from four segments with different traffic density and field settings from the roads encircling the lake. Thermomagnetic and hysteresis measurements revealed that the dominant magnetic carrier is coarse-grained magnetite. Correlations between magnetic parameters and element concentrations with traffic density and distances to the industrial region revealed that elements Cu, Ni and Fe mainly originate from vehicle traffic, which is also the major source of coarser magnetic particles (e.g., pseudo-single-domain/multi-domain (PSD/MD) grains), while element Pb and the smaller grains such as single-domain (SD) magnetic particles mainly originate from industrial emissions. The ratio between anhysteretic remanent magnetization and low-field magnetic susceptibility (ARM/χlf) can be employed as an indirect indicator for Cu, Fe and Ni emissions resulting from vehicle traffic. Due to the intermixture of elements from different sources, the element concentrations are not conclusive about the pollution source. A linear correlation between magnetic concentration-related parameters (e.g., ARM and saturation isothermal remanent magnetization, SIRM) and the concentrations of major elements (e.g., Cu, Co, Fe, Mn, Ni and V) suggests that they can be used as a proxy for heavy metal pollution. Road dusts in four segments show different magnetic characteristics, indicating various influxes of anthropogenic magnetic materials from vehicle traffic and industrial plants due to the different traffic loads and field settings. These results suggest that magnetic measurements can serve as an efficient complementary tool for the routinely employed geochemical methods to map the heavy metal pollution and trace the sources of pollutants in the road dust. © 2009 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/atmosenven_HK
dc.relation.ispartofAtmospheric Environmenten_HK
dc.subjectAtmospheric particulate matteren_HK
dc.subjectEnvironmental magnetismen_HK
dc.subjectHeavy metalsen_HK
dc.subjectRoad dusten_HK
dc.titleAnthropogenic magnetic particles and heavy metals in the road dust: Magnetic identification and its implicationsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1352-2310&volume=&spage=&epage=&date=2009&atitle=Anthropogenic+magnetic+particles+and+heavy+metals+in+the+road+dust:+Magnetic+identification+and+its+implicationsen_HK
dc.identifier.emailChan, L:chanls@hku.hken_HK
dc.identifier.authorityChan, L=rp00665en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.atmosenv.2009.12.028en_HK
dc.identifier.scopuseid_2-s2.0-76449116736en_HK
dc.identifier.hkuros170143en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-76449116736&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume44en_HK
dc.identifier.issue9en_HK
dc.identifier.spage1175en_HK
dc.identifier.epage1185en_HK
dc.identifier.eissn1873-2844-
dc.identifier.isiWOS:000276005500005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYang, T=9840350900en_HK
dc.identifier.scopusauthoridLiu, Q=8729121400en_HK
dc.identifier.scopusauthoridLi, H=35183589500en_HK
dc.identifier.scopusauthoridZeng, Q=35172377600en_HK
dc.identifier.scopusauthoridChan, L=7403540528en_HK
dc.identifier.citeulike6494414-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats