Jordon D Hemingway
Biographic Data
| ID | 5600514 |
|---|---|
| NAME | Jordon D Hemingway |
| GIVEN NAMES | Jordon D |
| FAMILY NAME | Hemingway |
| SIGNATURE | HEMINGWAY J D |
| VERIFIED | No |
| TOTAL WORKS | 3 |
| TOTAL CITATIONS | 10 |
| AUTHOR COUNT | 3 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2017 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Towards online ramped oxidation (ORO)-AMS for thermal dissection and serial radiocarbon analysis of complex organic matter
By constraining organic carbon (OC) turnover times and ages, radiocarbon ( 14 C) analysis has become a crucial tool to study the global carbon cycle. However, commonly used “bulk” measurements yield average turnover times, masking age variability within complex OC mixtures. One method to unravel intra-sample age distributions is ramped oxidation, in which OC is oxidized with the aid of oxygen at increasing temperatures. The resulting CO 2 is coll…
Influence of Different Acid Treatments on the Radiocarbon Content Spectrum of Sedimentary Organic Matter Determined by RPO/Accelerator Mass Spectrometry
In practice, obtaining radiocarbon ( 14 C) composition of organic matter (OM) in sediments requires first removing inorganic carbon (IC) by acid-treatment. Two common treatments are acid rinsing and fumigation. Resulting 14 C content obtained by different methods can differ, but underlying causes of these differences remain elusive. To assess the influence of different acid-treatments on 14 C content of sedimentary OM, we examine the variability …
Assessing the Blank Carbon Contribution, Isotope Mass Balance, and Kinetic Isotope Fractionation of the Ramped Pyrolysis/Oxidation Instrument at Nosams
We estimate the blank carbon mass over the course of a typical Ramped PyrOx (RPO) analysis (150–1000°C; 5°C×min –1 ) to be (3.7±0.6) μg C with an Fm value of 0.555±0.042 and a δ 13 C value of (–29.0±0.1) ‰ VPDB. Additionally, we provide equations for RPO Fm and δ 13 C blank corrections, including associated error propagation. By comparing RPO mass-weighted mean and independently measured bulk δ 13 C values for a compilation of environmental sampl…
Assessing the Blank Carbon Contribution, Isotope Mass Balance, and Kinetic Isotope Fractionation of the Ramped Pyrolysis/Oxidation Instrument at Nosams
We estimate the blank carbon mass over the course of a typical Ramped PyrOx (RPO) analysis (150–1000°C; 5°C×min –1 ) to be (3.7±0.6) μg C with an Fm value of 0.555±0.042 and a δ 13 C value of (–29.0±0.1) ‰ VPDB. Additionally, we provide equations for RPO Fm and δ 13 C blank corrections, including associated error propagation. By comparing RPO mass-weighted mean and independently measured bulk δ 13 C values for a compilation of environmental sampl…
Influence of Different Acid Treatments on the Radiocarbon Content Spectrum of Sedimentary Organic Matter Determined by RPO/Accelerator Mass Spectrometry
In practice, obtaining radiocarbon ( 14 C) composition of organic matter (OM) in sediments requires first removing inorganic carbon (IC) by acid-treatment. Two common treatments are acid rinsing and fumigation. Resulting 14 C content obtained by different methods can differ, but underlying causes of these differences remain elusive. To assess the influence of different acid-treatments on 14 C content of sedimentary OM, we examine the variability …
Assessing the Blank Carbon Contribution, Isotope Mass Balance, and Kinetic Isotope Fractionation of the Ramped Pyrolysis/Oxidation Instrument at Nosams
We estimate the blank carbon mass over the course of a typical Ramped PyrOx (RPO) analysis (150–1000°C; 5°C×min –1 ) to be (3.7±0.6) μg C with an Fm value of 0.555±0.042 and a δ 13 C value of (–29.0±0.1) ‰ VPDB. Additionally, we provide equations for RPO Fm and δ 13 C blank corrections, including associated error propagation. By comparing RPO mass-weighted mean and independently measured bulk δ 13 C values for a compilation of environmental sampl…
Influence of Different Acid Treatments on the Radiocarbon Content Spectrum of Sedimentary Organic Matter Determined by RPO/Accelerator Mass Spectrometry
In practice, obtaining radiocarbon ( 14 C) composition of organic matter (OM) in sediments requires first removing inorganic carbon (IC) by acid-treatment. Two common treatments are acid rinsing and fumigation. Resulting 14 C content obtained by different methods can differ, but underlying causes of these differences remain elusive. To assess the influence of different acid-treatments on 14 C content of sedimentary OM, we examine the variability …
Towards online ramped oxidation (ORO)-AMS for thermal dissection and serial radiocarbon analysis of complex organic matter
By constraining organic carbon (OC) turnover times and ages, radiocarbon ( 14 C) analysis has become a crucial tool to study the global carbon cycle. However, commonly used “bulk” measurements yield average turnover times, masking age variability within complex OC mixtures. One method to unravel intra-sample age distributions is ramped oxidation, in which OC is oxidized with the aid of oxygen at increasing temperatures. The resulting CO 2 is coll…
Chemistry (3 works) · Isotope Analysis in Ecology (3 works) · Accelerator mass spectrometry (2 works) · Carbonate (2 works) · Chromatography (2 works) · Geology (2 works) · Mass spectrometry (2 works) · Organic matter (2 works) · Radiocarbon dating (2 works) · Archaeology and ancient environmental studies (1 works)