Accelerator mass spectrometry radiocarbon dating

Knowledge graph centered on Accelerator mass spectrometry radiocarbon dating with 71 nodes and 142 connections. Top connected: carbon cycling, weathering, Gunnison County, soil organic carbon stabilization, vegetation community composition.

Method synopsis

Measurement of radiocarbon content in bulk sediments and density fractions using accelerator mass spectrometry after acid fumigation pretreatment to remove inorganic carbon.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Shale as a Source of Organic Carbon in Floodplain Sediments of a Mountainous Watershed (2020), JGR Biogeosciences. Implementations in other papers (listed below) may differ.

1. Radiocarbon sample preparation
   All samples were graphitized in the Houghton Carbon, Water and Soils Lab (USDA-FS Northern Research Station) according to Vogel et al. (1987). Bulk sediment and sediment HF were treated by acid fumigation with HCl vapors for 48 hr in a vacuum desiccator, then dried at 60 °C for 24 hr, and stored in a vacuum desiccator in order to remove inorganic carbon prior to radiocarbon analysis. Samples were graphitized, and analyzed for radiocarbon using an accelerator mass spectrometer.
   Quantities: 48 hr HCl vapor treatment, 60 °C drying temperature, 24 hr drying timeDuration: 48 hr acid fumigation, 24 hr dryingConditions: Vacuum desiccator, 60 °C temperature
   Equipment: vacuum desiccator, accelerator mass spectrometer

Typical Equipment

• vacuum desiccator
• accelerator mass spectrometer

Output Measurements

• Δ¹⁴C values
• conventional radiocarbon age
• fraction modern

Papers Using This Protocol (1)

Species Studied With This Protocol

Places Where Used