Results 221 to 230 of about 68,774 (280)

Barium Isotopes Indicate Spatiotemporal Heterogeneity of Marine Primary Productivity During the Toarcian Oceanic Anoxic Event

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Toarcian Oceanic Anoxic Event (T‐OAE, ∼183 Ma) was characterized by globally enhanced organic‐carbon burial and a negative carbon‐isotope excursion (N‐CIE). However, the role of marine productivity at this time, and its spatiotemporal variability, is unclear.
Wenhan Chen, David B. Kemp, Hugh C. Jenkyns, Stuart A. Robinson, Yibo Lin, Jun Hu, Zhong Han, Tianchen He, Feifei Zhang, Xilei Sun, Guangyu Shi, Chao Li   +11 more
wiley   +1 more source

Coupling Liquid Chromatography to Orbitrap Isotope Ratio Mass Spectrometry: Overcoming Isotope Effects of Chromatography and Amount-Dependency by Peak Homogenization. [PDF]

Anal Chem
Canavan A, Prechtl L, Al-Ghoul H, Kuhlbusch N, Erhardt AM, Elsner M.   +5 more
europepmc   +1 more source

Retrospective isotope monitoring reveals spatial and temporal effects of anthropogenic pressures on the trophic ecology of European wildcats (Felis silvestris) in Germany. [PDF]

PLoS One
Baumann C, Streif S, Akarsu AS, Nowak C, Drucker DG.   +4 more
europepmc   +1 more source

Dino Diets Revealed by Isotopes. [PDF]

ACS Cent Sci
Brazil R.
europepmc   +1 more source

Zinc/Silver-Based Hydrogen Sulfide Trapping as an Alternative to Cadmium for Sulfur Stable Isotope Analysis. [PDF]

Rapid Commun Mass Spectrom
Ure D, Dominato KR, Beaton ML, Mundle SOC.   +3 more
europepmc   +1 more source

A NEW ISOTOPE, SULFUR-38

, 1957
Nethaway, F.R., Caretto, A.A.
openaire   +1 more source

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Sulfur Isotopic Composition of Mangroves

Isotopes in Environmental and Health Studies, 1998
Abstract Sulfur isotope ratios of mangrove leaves of 19 species were compared to discuss the species-specific characteristics of sulfur uptake and assimilation. The members of Rhizophora and Bruguiera always show remarkable enrichments of the light isotope, giving negative δ(34)S values in most cases.
N, Okada, A, Sasaki
openaire   +2 more sources

Biogeochemistry of Sulfur Isotopes

Reviews in Mineralogy and Geochemistry, 2001
Sulfur, with an atomic weight of 32.06, has four stable isotopes. By far the most abundant is 32S, representing around 95% of the total sulfur on Earth. The next most abundant isotope is 34S, followed by 33S, and finally 36S is the least abundant contributing only 0.0136% to the total (Table 1⇓). The natural abundances of sulfur isotopes, however, vary
openaire   +2 more sources

Deciphering sulfur cycling with multiple sulfur isotopes

Nature Reviews Earth & Environment, 2022
Laetitia Guibourdenche explains the use of multiple sulfur isotopes in understanding past and present sulfur cycling.
openaire   +2 more sources

Seawater Sulfur Isotope Fluctuations in the Cretaceous

Science, 2004
The exogenic sulfur cycle is tightly coupled with the carbon and oxygen cycles, and therefore a central component of Earth's biogeochemistry. Here we present a high-resolution record of the sulfur isotopic composition of seawater sulfate for the Cretaceous.
Adina, Paytan, Miriam, Kastner, Douglas, Campbell, Mark H, Thiemens   +3 more
openaire   +2 more sources