Application of pyrolysis-GC/MS for the characterisation of suspended particulate organic matter in the Mediterranean Sea:: a comparison with the Black Sea

被引:10
作者
Çoban-Yildiz, Y
Fabbri, D
Tartari, D
Tugrul, S
Gaines, AF
机构
[1] Middle E Tech Univ, Inst Marine Sci, TR-33731 Erdemli, Icel, Turkey
[2] Univ Bologna, Lab Chim Ambientale, I-48100 Ravenna, Italy
[3] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow, Lanark, Scotland
关键词
Mediterranean Sea; Black Sea; Py-GC/MS; lipid; carbohydrale; protein; chlorophyll markers;
D O I
10.1016/S0146-6380(00)00098-X
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Suspended particulate organic matter (SPOM) both from the oligotrophic Mediterranean and from the more productive Black Sea has been analysed by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and by such conventional techniques as elemental analysis and fluorometry. The data achieved by the two approaches generally confirmed and complemented each other. The relative concentrations of pyrolysis products (termed markers) characteristic of chlorophyll (CHL), lipid, carbohydrate (CBH), and protein (PROT) components of SPOM have been determined. The vertical distribution of lipid markers was more uniform in the Mediterranean surface waters. Their relative abundance increased rapidly in the oxycline of the Black Sea, reaching their highest levels in the suboxic zone, where the protein composition of the SPOM changed significantly. In both seas, the relative concentrations of CHL markers increased consistently within the CHL maximum zone where the CBH markers were less abundant. No lignin markers from terrestrial vegetation were detected at significant levels in the pyrograms. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1627 / 1639
页数:13
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