Výsledky vyhledávání - "F. M. S. A. Kirkels"

Akademický článek

From soil to sea: sources and transport of organic carbon traced by tetraether lipids in the monsoonal Godavari River, India

Autor: F. M. S. A. Kirkels, H. M. Zwart, M. O. Usman, S. Hou, C. Ponton, L. Giosan, T. I. Eglinton, F. Peterse

Publikováno v: Biogeosciences, Vol 19, Pp 3979-4010 (2022)

Monsoonal rivers play an important role in the land-to-sea transport of soil-derived organic carbon (OC). However, spatial and temporal variation in the concentration, composition, and fate of this OC in these rivers remains poorly understood. We inv

Externí odkaz: https://doaj.org/article/5ee6390d4f284c7694476cec04690615

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Akademický článek

Carbon isotopic ratios of modern C3 and C4 vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

Autor: F. M. S. A. Kirkels, H. J. de Boer, P. Concha Hernández, C. R. T. Martes, M. T. J. van der Meer, S. Basu, M. O. Usman, F. Peterse

Publikováno v: Biogeosciences, Vol 19, Pp 4107-4127 (2022)

The large difference in the fractionation of stable carbon isotopes between C3 and C4 plants is widely used in vegetation reconstructions, where the predominance of C3 plants suggests wetter and that of C4 plants drier conditions. The stable carbon i

Externí odkaz: https://doaj.org/article/4dd7b41fc51c4eefb86c0ad687311e06

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Akademický článek

Reconciling drainage and receiving basin signatures of the Godavari River system

Autor: M. O. Usman, F. M. S. A. Kirkels, H. M. Zwart, S. Basu, C. Ponton, T. M. Blattmann, M. Ploetze, N. Haghipour, C. McIntyre, F. Peterse, M. Lupker, L. Giosan, T. I. Eglinton

Publikováno v: Biogeosciences, Vol 15, Pp 3357-3375 (2018)

The modern-day Godavari River transports large amounts of sediment (170 Tg per year) and terrestrial organic carbon (OCterr; 1.5 Tg per year) from peninsular India to the Bay of Bengal. The flux and nature of OCterr is considered to have varied i

Externí odkaz: https://doaj.org/article/f1cf6a82633448d09431ea7bda65e938

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A novel high-temperature combustion based system for stable isotope analysis of dissolved organic carbon in aqueous samples. II: optimization and assessment of analytical performance

Autor: F M S A, Kirkels, C, Cerli, E, Federherr, J, Gao, K, Kalbitz

Publikováno v: Rapid communications in mass spectrometry : RCM. 28(23)

Dissolved organic carbon (DOC) plays an important role in carbon cycling, making precise and routine measurement of δ(13)C values and DOC concentration highly desirable. A new promising system has been developed for this purpose. However, broad-scal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::3bc52578514ff68dd36b241d16d07cfa
https://pubmed.ncbi.nlm.nih.gov/25366404

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A novel high-temperature combustion based system for stable isotope analysis of dissolved organic carbon in aqueous samples. I: development and validation

Autor: E, Federherr, C, Cerli, F M S A, Kirkels, K, Kalbitz, H J, Kupka, R, Dunsbach, L, Lange, T C, Schmidt

Publikováno v: Rapid communications in mass spectrometry : RCM. 28(23)

Traditionally, dissolved organic carbon (DOC) stable isotope analysis (SIA) is performed using either offline sample preparation followed by elemental analyzer/isotope ratio mass spectrometry (EA/IRMS) or a wet chemical oxidation (WCO)-based device c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::cdb8482b489393405877d0289998580c
https://pubmed.ncbi.nlm.nih.gov/25366403

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