Distribution and sources of n-alkanes in surface sediments of Taihu Lake, China

• Autorzy: Yu Y. , Li Y. , Guo Z. , Zou H.

Identyfikatory

DOI

10.1515/aep-2016-0006

• Języki publikacji: EN

Abstrakty

EN

The last study on n-alkanes in surface sediments of Taihu Lake was in 2000, only 13 surface sediment samples were analysed, in order to have a comprehensive and up-to-date understanding of n-alkanes in the surface sediments of Taihu Lake, 41 surface sediment samples were analyzed by GC-MS. C₁₀ to C₃₇ were detected, the total concentrations of n-alkanes ranged from 2109 ng g⁻¹ to 9096 ng gg⁻¹ (dry weight). There was strong odd carbon predominance in long chain n-alkanes and even carbon predominance in short chain n-alkanes. When this finding was combined with the analysis results of wax n-alkanes (WaxCn), carbon preference index (CPI), unresolved complex mixture (UCM), hopanes and steranes, it was considered that the long chain n-alkanes were mainly from terrigenous higher plants, and that the short chain n-alkanes mainly originated from bacteria and algae in the lake, compared with previous studies, there were no obvious anthropogenic petrogenic inputs. Terrestrial and aquatic hydrocarbons ratio (TAR) and C₂₁−/C₂₅₊ indicated that terrigenous input was higher than aquatic sources and the nearshore n-alkanes were mainly from land-derived sources. Moreover, the distribution of short chain n-alkanes presented a relatively uniform pattern, while the long chain n-alkanes presented a trend that concentrations dropped from nearshore places to the middle of lake.

Słowa kluczowe

EN

n-alkanes; surface sediments; Taihu Lake

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2016
• Tom: Vol. 42, no. 1
• Strony: 49--55
• Opis fizyczny: Bibliogr. 7 poz., tab., wykr.

Twórcy

autor

Yu Y.

• Jiangnan University, China School of Environmental and Civil Engineering

autor

Li Y.

• Fudan University, China Department of Environmental Science and Engineering

autor

Guo Z.

• Fudan University, China Department of Environmental Science and Engineering

autor

Zou H.

• Jiangnan University, China School of Environmental and Civil Engineering

Bibliografia

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