Quantification of Sterol and Triterpenol Biomarkers in Sediments of the Cananéia-Iguape Estuarine-Lagoonal System (Brazil) by UHPLC-MS/MS

Sterols and triterpenols present in sedimentary cores from 12 stations along the Cananéia-Iguape estuarine-lagoonal system were investigated by ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS). Ten sterols and three triterpenols were identified and quantified, indi...

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Bibliographic Details
Published in:International Journal of Analytical Chemistry 2016-01, Vol.2016 (2016), p.276-283
Main Authors: Eberlin, Marcos Nogueira, Weber, Rolf Roland, Koolen, Hector Henrique Ferreira, Bataglion, Giovana Anceski
Format: Article
Language:English
Subjects:
Algae
Analytical chemistry
Biomarkers
Chemical properties
Cholesterol
Chromatography
Colleges & universities
Ecosystems
Flowers & plants
High performance liquid chromatography
Laboratories
Mass spectrometry
Methods
Ratios
River ecology
Scientific imaging
Sediments
Sterols
Terpenoids
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Summary:Sterols and triterpenols present in sedimentary cores from 12 stations along the Cananéia-Iguape estuarine-lagoonal system were investigated by ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS). Ten sterols and three triterpenols were identified and quantified, indicating both natural and anthropogenic sources. The relative distributions of sterol and triterpenol showed that the study area is submitted to organic matter (OM) from the Ribeira de Iguape River, seawater, surrounding vegetation, and plankton production. The contribution of these sources depends on the region of the estuarine-lagoonal system and the depth of sediment. Regarding anthropogenic sources, only the samples submitted to freshwater flow from the Ribeira de Iguape River presented concentration of coprostanol higher than the threshold value and diagnostic ratios, coprostanol/(coprostanol + cholestanol) and coprostanol/cholesterol, that indicate moderate contamination by domestic sewage in that area of the estuarine-lagoonal system. Therefore, the approach used herein identified the OM sources and its transport along the Cananéia-Iguape estuarine-lagoonal system (Brazil), which is a complex of lagoonal channels located in a United Nations Educational, Scientific and Cultural Organization (UNESCO) Biosphere Reserve.
ISSN:1687-8760
1687-8779
DOI:10.1155/2016/8361375