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

Open access

Abstract

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 g−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.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • Aboul-Kassim T.A. & Simoneit B.R. (1996). Lipid geochemistry of surficial sediments from the coastal environment of Egypt I. Aliphatic hydrocarbons-characterization and sources Marine Chemistry 54 1 pp. 135–158.

  • Asia L. Mazouz S. Guiliano M. Doumenq P. & Mille G. (2009). Occurrence and distribution of hydrocarbons in surface sediments from Marseille Bay (France) Marine Pollution Bulletin 58 3 pp. 443–451.

  • Goñi M.A. Ruttenberg K.C. & Eglinton T.I. (1997). Sources and contribution of terrigenous organic carbon to surface sediments in the Gulf of Mexico Nature 389 pp. 275–278.

  • Harji R.R. Yvenat A. & Bhosle N.B. (2008). Sources of hydrocarbons in sediments of the Mandovi estuary and the Marmugoa harbour west coast of India Environment International 34 7 pp. 959–965.

  • Hu L.M. Guo Z.G. Feng J.L. Yang Z.S. & Fang M. (2009). Distributions and sources of bulk organic matter and aliphatic hydrocarbons in surface sediments of the Bohai Sea China Marine Chemistry 113 pp. 197–211.

  • Kavouras I.G. & Stephanou E.G. (2002). Particle size distribution of organic primary and secondary aerosol constituents in urban background marine and forest atmosphere Journal of Geophysical Research 107 D8 pp. 1–12.

  • Rosik-Dulewska C. Ciesielczuk T. & Krysiński M. (2012). Organic pollutants in groundwater in the former airbase Archives of Environmental Protection 38 1 pp. 27–34.

Search
Journal information
Impact Factor


IMPACT FACTOR 2016: 0.708
5-year IMPACT FACTOR: 0.835

CiteScore 2018: 1.71

SCImago Journal Rank (SJR) 2018: 0.489
Source Normalized Impact per Paper (SNIP) 2018: 1.011

Cited By
Metrics
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 237 150 0
PDF Downloads 230 183 23