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Article: The characteristics of automobile catalyst-derived platinum group elements in road dusts and roadside soils: A case study in the Pearl River Delta region, South China

TitleThe characteristics of automobile catalyst-derived platinum group elements in road dusts and roadside soils: A case study in the Pearl River Delta region, South China
Authors
KeywordsAutomobile catalyst
PGE
Road dust
Roadside soil
South China
Issue Date2011
PublisherSpringer. The Journal's web site is located at http://www.springer.com/earth+sciences/geology/journal/12665
Citation
Environmental Earth Sciences, 2011, v. 64 n. 6, p. 1683-1692 How to Cite?
AbstractThe emission of platinum group elements (PGE) from automobile catalytic converters has led to enrichment of PGE in road dusts and roadside soils in urban areas that are well above the natural background levels. This paper evaluates the source of contamination of all the PGE and Au in road dusts and roadside soils in the Pearl River Delta region, including three major cities, Shenzhen, Guangzhou and Hong Kong, South China. Samples were digested using Carius tube and analyzed by isotope dilution ICP-MS; Os was separated by distillation and other PGE by Te-coprecipitation. All samples have elevated PGE concentrations above the background values of uncontaminated soils and contain higher Pt, Pd and Rh than other PGE. The maximum values are 181 ng/g Pt, 514 ng/g Pd, 53 ng/g Rh and 1345 ng/g Au. There are clear positive correlations between Pt and Pd, Pt and Rh, and Pd and Rh, indicating that the main emitted of PGE from automobile catalyst are Pt, Pd and Rh. High concentrations of Au were also found in road dust samples from Hong Kong and Shenzhen. Dust samples with higher Os contents have lower 187Os/ 188Os ratios. Samples from Hong Kong show relatively high Pt/Rh ratios. Positive correlations between Pt and Ru, and Pt and Ir were found in Shenzhen and Hong Kong, but only positive correlations between Pt and Ir were found in Guangzhou. These different characteristics reflect different automobile catalytic systems used in Hong Kong and mainland China. © 2010 The Author(s).
Persistent Identifierhttp://hdl.handle.net/10722/144873
ISSN
2014 Impact Factor: 1.765
2014 SCImago Journal Rankings: 0.644
ISI Accession Number ID
Funding AgencyGrant Number
Chinese Academy of SciencesKZCX2-YW-BR-09
National Natural Science Foundation of ChinaNSFC 40773070
Research Grant Council of Hong KongHKU7057/05P
Funding Information:

This study was supported by "CAS Hundred Talents" Project from Chinese Academy of Sciences to Qi Liang (KZCX2-YW-BR-09), the National Natural Science Foundation of China (NSFC 40773070), and the Research Grant Council of Hong Kong (HKU7057/05P). We thank Dr. D. C. Gregoire from the Geological Survey of Canada for providing us the spike solutions of 190Os, 101Ru, 105Pd, 193Ir, and 194Pt.

References

 

DC FieldValueLanguage
dc.contributor.authorQi, Len_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorZhao, Zen_HK
dc.contributor.authorHu, Jen_HK
dc.contributor.authorHuang, Yen_HK
dc.date.accessioned2012-02-21T05:43:44Z-
dc.date.available2012-02-21T05:43:44Z-
dc.date.issued2011en_HK
dc.identifier.citationEnvironmental Earth Sciences, 2011, v. 64 n. 6, p. 1683-1692en_HK
dc.identifier.issn1866-6280en_HK
dc.identifier.urihttp://hdl.handle.net/10722/144873-
dc.description.abstractThe emission of platinum group elements (PGE) from automobile catalytic converters has led to enrichment of PGE in road dusts and roadside soils in urban areas that are well above the natural background levels. This paper evaluates the source of contamination of all the PGE and Au in road dusts and roadside soils in the Pearl River Delta region, including three major cities, Shenzhen, Guangzhou and Hong Kong, South China. Samples were digested using Carius tube and analyzed by isotope dilution ICP-MS; Os was separated by distillation and other PGE by Te-coprecipitation. All samples have elevated PGE concentrations above the background values of uncontaminated soils and contain higher Pt, Pd and Rh than other PGE. The maximum values are 181 ng/g Pt, 514 ng/g Pd, 53 ng/g Rh and 1345 ng/g Au. There are clear positive correlations between Pt and Pd, Pt and Rh, and Pd and Rh, indicating that the main emitted of PGE from automobile catalyst are Pt, Pd and Rh. High concentrations of Au were also found in road dust samples from Hong Kong and Shenzhen. Dust samples with higher Os contents have lower 187Os/ 188Os ratios. Samples from Hong Kong show relatively high Pt/Rh ratios. Positive correlations between Pt and Ru, and Pt and Ir were found in Shenzhen and Hong Kong, but only positive correlations between Pt and Ir were found in Guangzhou. These different characteristics reflect different automobile catalytic systems used in Hong Kong and mainland China. © 2010 The Author(s).en_HK
dc.languageengen_US
dc.publisherSpringer. The Journal's web site is located at http://www.springer.com/earth+sciences/geology/journal/12665en_HK
dc.relation.ispartofEnvironmental Earth Sciencesen_HK
dc.rightsThe Author(s)en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_US
dc.subjectAutomobile catalysten_HK
dc.subjectPGEen_HK
dc.subjectRoad dusten_HK
dc.subjectRoadside soilen_HK
dc.subjectSouth Chinaen_HK
dc.titleThe characteristics of automobile catalyst-derived platinum group elements in road dusts and roadside soils: A case study in the Pearl River Delta region, South Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4551/resserv?sid=springerlink&genre=article&atitle=The characteristics of automobile catalyst-derived platinum group elements in road dusts and roadside soils: a case study in the Pearl River Delta region, South China&title=Environmental Earth Sciences&issn=18666280&date=2011-11-01&volume=64&issue=6& spage=1683&authors=Liang Qi, Mei-Fu Zhou, Zheng Zhao, <i>et al.</i>en_US
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1007/s12665-010-0635-yen_HK
dc.identifier.scopuseid_2-s2.0-80255138202en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80255138202&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume64en_HK
dc.identifier.issue6en_HK
dc.identifier.spage1683en_HK
dc.identifier.epage1692en_HK
dc.identifier.eissn1866-6299en_US
dc.identifier.isiWOS:000296360600020-
dc.publisher.placeGermanyen_HK
dc.description.otherSpringer Open Choice, 21 Feb 2012en_US
dc.identifier.scopusauthoridQi, L=7202149924en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridZhao, Z=18234308300en_HK
dc.identifier.scopusauthoridHu, J=49963376900en_HK
dc.identifier.scopusauthoridHuang, Y=55168951900en_HK

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