Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Ulrich M Hanke"'
Publikováno v:
PLoS ONE, Vol 19, Iss 11, p e0309654 (2024)
We employed two compelling and distinct methods, Fourier Transform Infrared Spectroscopy (FTIR) and Ramped Pyrolysis Oxidation (Ramped PyrOx), to examine the quality of organic matter (OM) stored in four peatlands located along a latitudinal gradient
Externí odkaz:
https://doaj.org/article/64ba09df932a4df280929584a0ae9b22
Autor:
Ulrich M Hanke, Alan R Gagnon, Christopher M Reddy, Mary C Lardie Gaylord, Anne J Cruz, Valier Galy, Roberta L Hansman, Mark D Kurz
Publikováno v:
Radiocarbon. 65:389-409
Sequential thermal analysis allows for deconvoluting the refractory nature and complexity of carbon mixtures embedded in mineral matrices for subsequent offline stable carbon and radiocarbon (14C) isotope analyses. Originally developed to separate Ho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5def7dde1171aa94ae3aa0e7f8c2f61a
https://doi.org/10.1017/rdc.2023.13
https://doi.org/10.1017/rdc.2023.13
Autor:
Christopher M. Reddy, Robert K. Nelson, Ulrich M. Hanke, Xingqian Cui, Roger E. Summons, David L. Valentine, Ryan P. Rodgers, Martha L. Chacón-Patiño, Sydney F. Niles, Carlos E.P. Teixeira, Luis E.A. Bezerra, Rivelino M. Cavalcante, Marcelo O. Soares, André H.B. Oliveira, Helen K. White, Robert F. Swarthout, Karin L. Lemkau, Jagoš R. Radović
Publikováno v:
Energy & Fuels. 36:13688-13704
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2996886deee3f1b7514e3d0b93a2140
https://doi.org/10.1021/acs.energyfuels.2c00656
https://doi.org/10.1021/acs.energyfuels.2c00656
Autor:
Mark D. Kurz, Christopher M. Reddy, Mark L. Roberts, Ulrich M. Hanke, Ann P. McNichol, Kathryn L. Elder, Collin P. Ward, Li Xu
Publikováno v:
Radiocarbon. 63:357-374
This study describes a procedural blank assessment of the ultraviolet photochemical oxidation (UV oxidation) method that is used to measure carbon isotopes of dissolved organic carbon (DOC) at the National Ocean Sciences Accelerator Mass Spectrometry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b82f47337322b37f442829f830397342
https://doi.org/10.1017/rdc.2020.102
https://doi.org/10.1017/rdc.2020.102
Autor:
Pascale F. Poussart, Li Xu, Ulrich M. Hanke, Konrad A Hughen, Ana L. Lima-Braun, Christopher M. Reddy, Valier Galy, Ann P. McNichol, Jeffrey P. Donnelly, Timothy I. Eglinton
Publikováno v:
Environmental Science & Technology. 53:8244-8251
Perylene is a frequently abundant, and sometimes the only polycyclic aromatic hydrocarbon (PAH) in aquatic sediments, but its origin has been subject of a longstanding debate in geochemical research and pollutant forensics because its historical reco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cfd16ddb20916e99eb417598cc93f66
https://doi.org/10.1021/acs.est.9b02344
https://doi.org/10.1021/acs.est.9b02344
Autor:
Christopher M. Reddy, Ana L. L. Braun, Alysha I. Coppola, Michael W. I. Schmidt, Samuel Abiven, Ulrich M. Hanke, Lukas Wacker, Timothy I. Eglinton, Negar Haghipour, Cameron McIntyre, Ann P. McNichol, Li Xu
Publikováno v:
Environmental Science & Technology. 51:12972-12980
Humans have interacted with fire for thousands of years, yet the utilization of fossil fuels marked the beginning of a new era. Ubiquitous in the environment, pyrogenic carbon (PyC) arises from incomplete combustion of biomass and fossil fuels, formi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fedb4cf7f48882336777c4e631e9e5b5
https://doi.org/10.1021/acs.est.7b03243
https://doi.org/10.1021/acs.est.7b03243
Autor:
Cameron McIntyre, Timothy I. Eglinton, Ulrich M. Hanke, Negar Haghipour, Max W. Schmidt, Lukas Wacker
Publikováno v:
Radiocarbon. 59:1103-1116
Compound-specific radiocarbon analysis (CSRA) of benzene polycarboxylic acids (BPCAs) yields molecular-level, source-specific information necessary to constrain isotopic signatures of pyrogenic carbon. However, the purification of individual BPCAs re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75993490ea59238ffc82420860333653
https://doi.org/10.1017/rdc.2017.44
https://doi.org/10.1017/rdc.2017.44
Autor:
Ulrich M. Hanke, Timothy I. Eglinton, Christopher M. Reddy, Michael W. I. Schmidt, Daniel B. Wiedemeier, Ana L. L. Braun
Publikováno v:
Geophysical Research Letters. 43:5098-5108
Pyrogenic carbon (PyC) is a collective term for carbon-rich residues comprised of a continuum of products arising from biomass burning and fossil-fuel combustion. PyC is ubiquitous in the environment where it can be transported by wind and water befo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9213bda778c86517a0f57c292a9d2566
https://doi.org/10.1002/2016gl069253
https://doi.org/10.1002/2016gl069253
Autor:
Enno Schefuß, Negar Haghipour, Lukas Wacker, Samuel Abiven, Chantal V. Freymond, Alysha I. Coppola, Gabriela S. Nascimento, Bernhard Peucker-Ehrenbrink, Valier Galy, Britta Voss, Daniel B. Wiedemeier, Timothy I. Eglinton, Thomas M. Blattmann, Moritz Reisser, Muhammed Usman, Michael W. I. Schmidt, Ulrich M. Hanke, Meixun Zhao
Publikováno v:
Nature Geoscience, 11 (8)
Wildfires and incomplete combustion of fossil fuel produce large amounts of black carbon. Black carbon production and transport are essential components of the carbon cycle. Constraining estimates of black carbon exported from land to ocean is critic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d37c29044972e8045ab50061a6089360
https://hdl.handle.net/20.500.11850/275819
https://hdl.handle.net/20.500.11850/275819
Autor:
Lukas Wacker, Stefano M. Bernasconi, Daniel B. Wiedemeier, Irka Hajdas, Gretchen L. Früh-Green, Ulrich M. Hanke, Rienk H. Smittenberg, Guido L. B. Wiesenberg, Michael W. I. Schmidt, Cameron McIntyre, Maximilian P W Scheider, Michael D. Hilf, Merle Gierga, Susan Q. Lang, Samuel Abiven
Publikováno v:
Journal of Visualized Experiments
Journal of Visualized Experiments : JoVE
Journal of Visualized Experiments (JoVE)
Journal of Visualized Experiments : JoVE
Journal of Visualized Experiments (JoVE)
Fire-derived, pyrogenic carbon (PyC), sometimes called black carbon (BC), is the carbonaceous solid residue of biomass and fossil fuel combustion, such as char and soot. PyC is ubiquitous in the environment due to its long persistence, and its abunda
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63cfe82d67fe6f694f37c1da2d87d058
https://eprints.gla.ac.uk/136626/1/136626.pdf
https://eprints.gla.ac.uk/136626/1/136626.pdf