Influence of Different Acid Treatments on the Radiocarbon Content Spectrum of Sedimentary Organic Matter Determined by RPO/Accelerator Mass Spectrometry
Bibliographic Data
| ID | 9244284 |
|---|---|
| Authors | Rui Bao (0000-0001-8159-5269), Ann P McNichol (0000-0002-9895-3912), Jordon D Hemingway, Mary C Lardie Gaylord, Timothy I Eglinton (0000-0001-5060-2155) |
| Year | 2019 |
| Volume | 61 |
| Issue | 2 |
| Pages | 395-413 |
| Publication date | 2019-04-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/rdc.2018.125 |
| OpenAlex | W2900723470 |
| Language | EN |
| Citations received | 5 |
| References cited | 45 |
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 in 14 C content for a range of marine and river sediments. By comparing results for unacidified and acidified sediments [HCl rinsing (Rinse HCl ) and HCl fumigation (Fume HCl )], we demonstrate that the two acid-treatments can affect 14 C content differentially. Our findings suggest that, for low-carbonate samples, Rinse HCl affects the Fm values due to loss of young labile organic carbon (OC). Fume HCl makes the Fm values for labile OC decrease, leaving the residual OC older. High-carbonate samples can lose relatively old organic components during Rinse HCl , causing the Fm values of remaining OC to increase. Fume HCl can remove thermally labile, usually young, OC and reduce the Fm values. We suggest three factors should be taken into account when using acid to remove carbonate from sediments: IC abundance, proportions of labile and refractory OC, and environmental matrix
Accelerator mass spectrometry · Carbonate · Chromatography · Dissolved organic carbon · Mass spectrometry · Mineralogy · Organic matter · Radiocarbon dating · Total organic carbon · Archaeology and ancient environmental studies · Chemistry · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Environmental Chemistry · Geology · Organic Chemistry
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Comparison of Fractionation Methods for Soil Organic Matter 14 C Analysis
Assessing the Blank Carbon Contribution, Isotope Mass Balance, and Kinetic Isotope Fractionation of the Ramped Pyrolysis/Oxidation Instrument at Nosams
Improving Antarctic Sediment 14 C Dating Using Ramped Pyrolysis
Dimensions of Radiocarbon Variability within Sedimentary Organic Matter
Radiocarbon in Particulate Matter from the Eastern Sub-Arctic Pacific Ocean
Distribution of Radiocarbon Ages in Soil Organic Matter by Thermal Fractionation
C AMS Measurements of <100 μG Samples with a High-Current System
Discussion Reporting of 14 C Data
| Unique citing works | 5 |
|---|---|
| Citations per year | 1,67 |
| Citation span | 2023 - 2026 (4) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 3 |