Search Results - "Floor, Geerke H."

Mg Isotope Fractionation during Uptake by a Rock-Inhabiting, Model Microcolonial Fungus Knufia petricola at Acidic and Neutral pH by Pokharel, Rasesh, Gerrits, Ruben, Schuessler, Jan A., Floor, Geerke H., Gorbushina, Anna A., von Blanckenburg, Friedhelm

“…The model rock-inhabiting microcolonial fungus Knufia petricola fractionates stable Mg isotopes in a time- and pH-dependent manner. During growth, the increase…”
Get full text

Flow injection analysis as a tool for enhancing oceanographic nutrient measurements—A review by Worsfold, Paul J., Clough, Robert, Lohan, Maeve C., Monbet, Philippe, Ellis, Peter S., Quétel, Christophe R., Floor, Geerke H., McKelvie, Ian D.

“…•FIA and SIA techniques for nutrient determinations in marine waters are critically reviewed.•The advantages and suitability of FIA for underway and shipboard…”
Get full text

Quantification of trace arsenic in soils by field-portable X-ray fluorescence spectrometry: Considerations for sample preparation and measurement conditions by Parsons, Chris, Margui Grabulosa, Eva, Pili, Eric, Floor, Geerke H., Roman-Ross, Gabriela, Charlet, Laurent

“…► Quantitative in situ analysis of trace As (<20ppm) in soils by FP-XRF. ► Importance of attenuation of measured concentrations by pore water. ► Influence of…”
Get full text

Selenium in volcanic environments: A review by Floor, Geerke H., Román-Ross, Gabriela

“…[Display omitted] ► Selenium has a narrow range between toxic and essential concentrations. ► Selenium is volatilized and transferred to the environment during…”
Get full text

Study of selenium sorption processes in volcanic ash using Total Reflection X-ray Fluorescence (TXRF) by Floor, Geerke H., Marguí, Eva, Hidalgo, Manuela, Queralt, Ignasi, Kregsamer, Peter, Streli, Christina, Román-Ross, Gabriela

“…Selenium (Se) cycling around volcanoes has implications for human health given the high population density close to volcanoes and the narrow range between…”
Get full text

Combined uncertainty estimation for the determination of the dissolved iron amount content in seawater using flow injection with chemiluminescence detection by Floor, Geerke H., Clough, Robert, Lohan, Maeve C., Ussher, Simon J., Worsfold, Paul J., Quétel, Christophe R.

“…This work assesses the components contributing to the combined uncertainty budget associated with the measurement of the Fe amount content by flow injection…”
Get full text

Influence of methane addition on selenium isotope sensitivity and their spectral interferences by Floor, Geerke H, Millot, Romain, Iglesias, Mónica, Négrel, Philippe

“…The measurements of stable selenium (Se) isotopic signatures by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) are very challenging,…”
Get full text

Online Preconcentration-IC-ICP-MS for Selenium Quantification and Speciation at Ultratraces by Lenz, Markus, Floor, Geerke H, Winkel, Lenny H. E, Román-Ross, Gabriela, Corvini, Philippe F. X

“…Selenium (Se) is of key importance to human health with a very narrow concentration range of optimal dietary intake. Due to the inherent analytical challenge…”
Get full text

Selenium speciation in acidic environmental samples: Application to acid rain–soil interaction at Mount Etna volcano by Floor, Geerke H., Iglesías, Mònica, Román-Ross, Gabriela, Corvini, Philippe F.X., Lenz, Markus

“…[Display omitted] ► Precipitation of Al and Fe phases can hamper selenium speciation analyses. ► In a ammonium citrate buffer at pH=3 aqueous Fe and Al are…”
Get full text

Fe isotopes of a 2.4 Ga hematite-rich IF constrain marine redox conditions around the GOE by Lantink, Margriet L., Oonk, Paul B.H., Floor, Geerke H., Tsikos, Harilaos, Mason, Paul R.D.

“…•Paleoenvironmental reconstruction at the base of the hematite- and Mn-rich Hotazel iron formation.•Petrographic and geochemical evidence point to a primary…”
Get full text

Quantification of trace arsenic in soils by field-portable X-ray fluorescence spectrometry: Considerations for sample preparation and measurement conditions : Arsenic ecotoxicology: The interface between geosphere, hydrosphere and biosphere by PARSONS, Chris, GRABULOSA, Eva Margui, PILI, Eric, FLOOR, Geerke H, ROMAN-ROSS, Gabriela, CHARLET, Laurent

Get full text

Selenium mobilization in soils due to volcanic derived acid rain: An example from Mt Etna volcano, Sicily by Floor, G.H., Calabrese, S., Román-Ross, G., D´Alessandro, W., Aiuppa, A.

“…The significant amounts of selenium (Se) emitted by volcanoes may have important impact on human health due to the narrow range between nutrition requirement…”
Get full text