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Characterization of aliphatic hydrocarbons in deep subsurface soils near the outskirts of Beijing, China.
Zhu, You-Feng; Liu, Hui; Xi, Zhi-Qun; Cheng, Hang-Xin; Xu, Xiao-Bai.
Afiliação
  • Zhu YF; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
J Environ Sci (China) ; 17(3): 360-4, 2005.
Article em En | MEDLINE | ID: mdl-16083103
Thirty-nine deep subsurface soils (150-180 cm depth) near the outskirts of Beijing were investagated. The concentrations including n-alkanes from C13 to C36, pristane and phytane were in the range of 0.60 to 170.10 microg/g, with a median value of 4.26. Carbon preference index values for n-alkanes ranged from 1.08 to 2.98, with a median value of 1.48. The percentage contribution of "wax" n-alkanes was in the range of 6.03%--46.22%. A predominance of odd/even carbon n-alkanes and unresolved complex mixtures with different shapes and ranges were frequently observed. Factor analysis reduced the data set into three principal components and confirming contributions from low (19.58%), medium (20.49%) molecular weight species and long-chain n-alkanes (43.41%), respectively. Molecular biomarkers such as pristane, phytane, hopanes and steranes were detected. Based on the principal component analysis, the concentration profiles and molecular markers, it was found that the aliphatic hydrocarbons were from both biogenic and anthropogenic sources.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Monitoramento Ambiental / Alcanos País/Região como assunto: Asia Idioma: En Revista: J Environ Sci (China) Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2005 Tipo de documento: Article País de afiliação: China País de publicação: Holanda
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Monitoramento Ambiental / Alcanos País/Região como assunto: Asia Idioma: En Revista: J Environ Sci (China) Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2005 Tipo de documento: Article País de afiliação: China País de publicação: Holanda