n-Alkanes, PAHs and surfactants in the sea surface microlayer and sea water samples of the Gerlache Inlet sea (Antarctica)

被引：66
作者：
Stortini, A. M. [2 ]
Martellini, T. [1 ]
Del Bubba, M. [1 ]
Lepri, L. [1 ]
Capodaglio, G. [2 ,3 ]
Cincinelli, A. [1 ]
机构：
[1] Univ Florence, Dept Chem, I-50019 Florence, Italy
[2] CNR, IDPA, Inst Dynam Environm Proc, I-30123 Venice, Italy
[3] Univ Ca Foscari Venice, Dept Environm Sci, I-30123 Venice, Italy
来源：
MICROCHEMICAL JOURNAL | 2009年 / 92卷 / 01期
关键词：
Hydrocarbons; Antarctica; Sea-surface microlayer; Subsurface; Enrichment; POLYCYCLIC AROMATIC-HYDROCARBONS; MARINE ORGANIC-MATTER; ROSS SEA; BIOGENIC HYDROCARBONS; FULVIC-ACID; CONTAMINATION; SEAWATER; FRACTIONATION; VARIABILITY; EXTRACTION;
D O I：
10.1016/j.microc.2008.11.005
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Sea surface microlayer (SML) and sea water samples (SSW) collected in the Gerlache Inlet Sea (Antarctica) were analysed for n-alkanes and polycyclic aromatic hydrocarbons (PAHs). The SML is a potential enrichment site of hydrophobic organic compounds compared to the underlying water column. Total concentration ranges of n-alkanes and PAHs (dissolved and particulate) in subsurface water (-0.5 m depth) were 272-553 ng l(-1) (mean: 448 ng l(-1)) and 5.27-9.43 ng l(-1) (mean: 7.06 ng l(-1)), respectively. In the SML, the concentration ranges of n-alkanes and PAHs were 353-968 ng l(-1) (mean: 611 ng l(-1)) and 7.32-23.94 ng l(-1) (mean: 13.22 ng l(-1)), respectively. To evaluate possible PAH contamination sources, specific PAH ratios were calculated. The ratios reflected a predominant petrogenic input. A characterisation of surface active substances was also performed on SML and SSW samples, both by gas bubble extraction, and by dynamic surface tension measurements. Results showed a good correlation between n-alkanes, PAHs and refractory organic matter. (C) 2008 Elsevier B.V. All rights reserved.
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收藏
页码：37 / 43
页数：7
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