Kathryn L Elder
Biographic Data
| ID | 5597497 |
|---|---|
| NAME | Kathryn L Elder |
| GIVEN NAMES | Kathryn L |
| FAMILY NAME | Elder |
| SIGNATURE | ELDER K L |
| AFFILIATIONS | Woods Hole Oceanographic Institution |
| ORCID | 0000-0003-4030-6752 |
| VERIFIED | Yes |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 25 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1997 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 3 |
A simple and effective method to remove hydrogen sulfide from fluid and gas samples prior to radiocarbon analysis of CO 2 gas and dissolved inorganic carbon
The radiocarbon content of dissolved inorganic carbon (DIC: CO 2(aq) , HCO 3 – , CO 3 2– ) and gaseous CO 2 can provide valuable information for the cycling and residence time of carbon in groundwaters, porewaters, hydrocarbon reservoirs, methane seeps, and hydrothermal systems. Fluids and gases from these systems often contain high concentrations of hydrogen sulfide (H 2 S) that interferes with critical steps of the analytical procedure, particu…
Radiocarbon in Dissolved Organic Carbon by Uv Oxidation
This note describes improvements of UV oxidation method that is used to measure carbon isotopes of dissolved organic carbon (DOC) at the National Ocean Sciences Accelerator Mass Spectrometry Facility (NOSAMS). The procedural blank is reduced to 2.6 ± 0.6 μg C, with Fm of 0.42 ± 0.10 and δ 13 C of –28.43 ± 1.19‰. The throughput is improved from one sample per day to two samples per day
Implications of Single-Step Graphitization for Reconstructing Late Holocene Relative Sea-Level Using Radiocarbon-Dated Organic Coastal Sediment
Late Holocene relative sea-level reconstructions are commonly generated using proxies preserved in salt-marsh and mangrove sediment. These depositional environments provide abundant material for radiocarbon dating in the form of identifiable macrofossils (salt marshes) and bulk organic sediment (mangroves). We explore if single-step graphitization of these samples in preparation for radiocarbon dating can increase the number and temporal resoluti…
Radiocarbon in Dissolved Organic Carbon by Uv Oxidation
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 Facility (NOSAMS). A retrospective compilation of Fm and δ 13 C results for secondary standards (OX-II, glycine) between 2009 and 2018 indicated that a revised blank correction was required to bring …
Erroneously Old Radiocarbon Ages From Terrestrial Pollen Concentrates in Yellowstone Lake, Wyoming, Usa
Accelerator mass spectrometry (AMS) dating of pollen concentrates is often used in lake sediment records where large, terrestrial plant remains are unavailable. Ages produced from chemically concentrated pollen as well as manually picked Pinaceae grains in Yellowstone Lake (Wyoming) sediments were consistently 1700–4300 cal years older than ages established by terrestrial plant remains, tephrochronology, and the age of the sediment-water interfac…
Single step Production of graphite from organic Samples for Radiocarbon Measurements
We present a new low-cost, high-throughput method for converting many types of organic carbon samples into graphite for radiocarbon ( 14 C) measurements by accelerator mass spectrometry (AMS). The method combines sample combustion and reduction to graphite into a single procedure. In the Single Step method, solid samples are placed directly into Pyrex containing zinc, titanium hydride and iron catalyst. The tube is evacuated, flame sealed, and pl…
A High-Performance 14 C Accelerator Mass Spectrometry System
A new and unique radiocarbon accelerator mass spectrometry (AMS) facility has been constructed at the Woods Hole Oceanographic Institution. The defining characteristic of the new system is its large-gap optical elements that provide a larger-than-standard beam acceptance. Such a system is ideally suited for high-throughput, high-precision measurements of 14 C. Details and performance of the new system are presented
The Passage of the Bomb Radiocarbon Pulse into the Pacific Ocean
We report and compare radiocarbon observations made on 2 meridional oceanographic sections along 150°W in the South Pacific in 1991 and 2005. The distributions reflect the progressive penetration of nuclear weapons-produced 14 C into the oceanic thermocline. The changes over the 14 yr between occupations are demonstrably large relative to any possible drift in our analytical standardization. The computed difference field based on the gridded data…
Reproducibility of Seawater, Inorganic and Organic Carbon 14 C Results at Nosams
The majority of samples processed at the National Ocean Sciences AMS Facility (NOSAMS) thus far were collected as part of the World Ocean Circulation Experiment (WOCE). Due to the long storage time (2–3 yr) required to analyze thousands of samples on the accelerator mass spectrometer (AMS), a test was designed and implemented to determine the effects, if any, of storage time on 14 C concentration. We find no systematic offsets in AMS measurements…
A High-Performance 14 C Accelerator Mass Spectrometry System
A new and unique radiocarbon accelerator mass spectrometry (AMS) facility has been constructed at the Woods Hole Oceanographic Institution. The defining characteristic of the new system is its large-gap optical elements that provide a larger-than-standard beam acceptance. Such a system is ideally suited for high-throughput, high-precision measurements of 14 C. Details and performance of the new system are presented
The Passage of the Bomb Radiocarbon Pulse into the Pacific Ocean
We report and compare radiocarbon observations made on 2 meridional oceanographic sections along 150°W in the South Pacific in 1991 and 2005. The distributions reflect the progressive penetration of nuclear weapons-produced 14 C into the oceanic thermocline. The changes over the 14 yr between occupations are demonstrably large relative to any possible drift in our analytical standardization. The computed difference field based on the gridded data…
Radiocarbon in Dissolved Organic Carbon by Uv Oxidation
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 Facility (NOSAMS). A retrospective compilation of Fm and δ 13 C results for secondary standards (OX-II, glycine) between 2009 and 2018 indicated that a revised blank correction was required to bring …
Erroneously Old Radiocarbon Ages From Terrestrial Pollen Concentrates in Yellowstone Lake, Wyoming, Usa
Accelerator mass spectrometry (AMS) dating of pollen concentrates is often used in lake sediment records where large, terrestrial plant remains are unavailable. Ages produced from chemically concentrated pollen as well as manually picked Pinaceae grains in Yellowstone Lake (Wyoming) sediments were consistently 1700–4300 cal years older than ages established by terrestrial plant remains, tephrochronology, and the age of the sediment-water interfac…
Single step Production of graphite from organic Samples for Radiocarbon Measurements
We present a new low-cost, high-throughput method for converting many types of organic carbon samples into graphite for radiocarbon ( 14 C) measurements by accelerator mass spectrometry (AMS). The method combines sample combustion and reduction to graphite into a single procedure. In the Single Step method, solid samples are placed directly into Pyrex containing zinc, titanium hydride and iron catalyst. The tube is evacuated, flame sealed, and pl…
Reproducibility of Seawater, Inorganic and Organic Carbon 14 C Results at Nosams
The majority of samples processed at the National Ocean Sciences AMS Facility (NOSAMS) thus far were collected as part of the World Ocean Circulation Experiment (WOCE). Due to the long storage time (2–3 yr) required to analyze thousands of samples on the accelerator mass spectrometer (AMS), a test was designed and implemented to determine the effects, if any, of storage time on 14 C concentration. We find no systematic offsets in AMS measurements…
Reproducibility of Seawater, Inorganic and Organic Carbon 14 C Results at Nosams
The majority of samples processed at the National Ocean Sciences AMS Facility (NOSAMS) thus far were collected as part of the World Ocean Circulation Experiment (WOCE). Due to the long storage time (2–3 yr) required to analyze thousands of samples on the accelerator mass spectrometer (AMS), a test was designed and implemented to determine the effects, if any, of storage time on 14 C concentration. We find no systematic offsets in AMS measurements…
A High-Performance 14 C Accelerator Mass Spectrometry System
A new and unique radiocarbon accelerator mass spectrometry (AMS) facility has been constructed at the Woods Hole Oceanographic Institution. The defining characteristic of the new system is its large-gap optical elements that provide a larger-than-standard beam acceptance. Such a system is ideally suited for high-throughput, high-precision measurements of 14 C. Details and performance of the new system are presented
The Passage of the Bomb Radiocarbon Pulse into the Pacific Ocean
We report and compare radiocarbon observations made on 2 meridional oceanographic sections along 150°W in the South Pacific in 1991 and 2005. The distributions reflect the progressive penetration of nuclear weapons-produced 14 C into the oceanic thermocline. The changes over the 14 yr between occupations are demonstrably large relative to any possible drift in our analytical standardization. The computed difference field based on the gridded data…
Single step Production of graphite from organic Samples for Radiocarbon Measurements
We present a new low-cost, high-throughput method for converting many types of organic carbon samples into graphite for radiocarbon ( 14 C) measurements by accelerator mass spectrometry (AMS). The method combines sample combustion and reduction to graphite into a single procedure. In the Single Step method, solid samples are placed directly into Pyrex containing zinc, titanium hydride and iron catalyst. The tube is evacuated, flame sealed, and pl…
Radiocarbon in Dissolved Organic Carbon by Uv Oxidation
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 Facility (NOSAMS). A retrospective compilation of Fm and δ 13 C results for secondary standards (OX-II, glycine) between 2009 and 2018 indicated that a revised blank correction was required to bring …
Erroneously Old Radiocarbon Ages From Terrestrial Pollen Concentrates in Yellowstone Lake, Wyoming, Usa
Accelerator mass spectrometry (AMS) dating of pollen concentrates is often used in lake sediment records where large, terrestrial plant remains are unavailable. Ages produced from chemically concentrated pollen as well as manually picked Pinaceae grains in Yellowstone Lake (Wyoming) sediments were consistently 1700–4300 cal years older than ages established by terrestrial plant remains, tephrochronology, and the age of the sediment-water interfac…
Radiocarbon in Dissolved Organic Carbon by Uv Oxidation
This note describes improvements of UV oxidation method that is used to measure carbon isotopes of dissolved organic carbon (DOC) at the National Ocean Sciences Accelerator Mass Spectrometry Facility (NOSAMS). The procedural blank is reduced to 2.6 ± 0.6 μg C, with Fm of 0.42 ± 0.10 and δ 13 C of –28.43 ± 1.19‰. The throughput is improved from one sample per day to two samples per day
Implications of Single-Step Graphitization for Reconstructing Late Holocene Relative Sea-Level Using Radiocarbon-Dated Organic Coastal Sediment
Late Holocene relative sea-level reconstructions are commonly generated using proxies preserved in salt-marsh and mangrove sediment. These depositional environments provide abundant material for radiocarbon dating in the form of identifiable macrofossils (salt marshes) and bulk organic sediment (mangroves). We explore if single-step graphitization of these samples in preparation for radiocarbon dating can increase the number and temporal resoluti…
A simple and effective method to remove hydrogen sulfide from fluid and gas samples prior to radiocarbon analysis of CO 2 gas and dissolved inorganic carbon
The radiocarbon content of dissolved inorganic carbon (DIC: CO 2(aq) , HCO 3 – , CO 3 2– ) and gaseous CO 2 can provide valuable information for the cycling and residence time of carbon in groundwaters, porewaters, hydrocarbon reservoirs, methane seeps, and hydrothermal systems. Fluids and gases from these systems often contain high concentrations of hydrogen sulfide (H 2 S) that interferes with critical steps of the analytical procedure, particu…
Geology (8 works) · Accelerator mass spectrometry (7 works) · Radiocarbon dating (6 works) · Isotope Analysis in Ecology (5 works) · Mass spectrometry (5 works) · Carbon fibers (4 works) · Chemistry (4 works) · Chromatography (4 works) · Environmental Chemistry (4 works) · Geology and Paleoclimatology Research (4 works)