Gas Chromatography Coupled to High Resolution Time-of-Flight Mass Spectrometry as a High-Throughput Tool for Characterizing Geochemical Biomarkers in Sediments
المؤلفون المشاركون
Bataglion, Giovana Anceski
Koolen, Hector Henrique Ferreira
Weber, Rolf Roland
Klitzke, Clécio Fernando
Binkley, Joe
Patrick, Jeffrey
de Albergaria-Barbosa, Ana Cecília Rizatti
Bícego, Márcia Caruso
Eberlin, Marcos Nogueira
المصدر
International Journal of Analytical Chemistry
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-12-02
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
The performance of gas chromatography coupled to high-resolution time-of-flight mass spectrometry (GC-HRTofMS) for characterizing geochemical biomarkers from sediment samples was evaluated.
Two approaches to obtain the geochemical biomarkers were tested: (1) extraction with organic solvent and subsequent derivatization and (2) in-situ derivatization thermal desorption.
Results demonstrated that both approaches can be conveniently applied for simultaneous characterization of many geochemical biomarkers (alkanes, alkanols, sterols, and fatty acids), avoiding conventional time-consuming purification procedures.
GC-HRTofMS reduces both sample preparation time and the number of chromatographic runs compared to traditional methodologies used in organic geochemistry.
Particularly, the approach based on in-situ derivatization thermal desorption represents a very simple method that can be performed in-line employing few milligrams of sediment, eliminating the need for any sample preparation and solvent use.
The high resolving power (m/Δm50% 25,000) and high mass accuracy (error ≤ 1 ppm) offered by the “zig-zag” time-of-flight analyzer were indispensable to resolve the complexity of the total ion chromatograms, representing a high-throughput tool.
Extracted ion chromatograms using exact m/z were useful to eliminate many isobaric interferences and to increase significantly the signal to noise ratio.
Characteristic fragment ions allowed the identification of homologous series, such as alkanes, alkanols, fatty acids, and sterols.
Polycyclic aromatic hydrocarbons were also identified in the samples by their molecular ions.
The characterization of geochemical biomarkers along a sedimentary core collected in the area of Valo Grande Channel (Cananéia-Iguape Estuarine-Lagunar System (São Paulo, Brazil)) provided evidences of environmental changes.
Sediments deposited before opening of channel showed dominance of biomarkers from mangrove vegetation, whereas sediments of the pos-opening period showed an increase of biomarkers from aquatic macrophyte (an invasive vegetation).
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Koolen, Hector Henrique Ferreira& Klitzke, Clécio Fernando& Binkley, Joe& Patrick, Jeffrey& de Albergaria-Barbosa, Ana Cecília Rizatti& Weber, Rolf Roland…[et al.]. 2018. Gas Chromatography Coupled to High Resolution Time-of-Flight Mass Spectrometry as a High-Throughput Tool for Characterizing Geochemical Biomarkers in Sediments. International Journal of Analytical Chemistry،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1166317
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Koolen, Hector Henrique Ferreira…[et al.]. Gas Chromatography Coupled to High Resolution Time-of-Flight Mass Spectrometry as a High-Throughput Tool for Characterizing Geochemical Biomarkers in Sediments. International Journal of Analytical Chemistry No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1166317
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Koolen, Hector Henrique Ferreira& Klitzke, Clécio Fernando& Binkley, Joe& Patrick, Jeffrey& de Albergaria-Barbosa, Ana Cecília Rizatti& Weber, Rolf Roland…[et al.]. Gas Chromatography Coupled to High Resolution Time-of-Flight Mass Spectrometry as a High-Throughput Tool for Characterizing Geochemical Biomarkers in Sediments. International Journal of Analytical Chemistry. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1166317
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1166317
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر