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   Articles with "radiocarbon analysis" as a keyword



Comprehensive radiocarbon analysis of benzene polycarboxylic acids (BPCAs) derived from pyrogenic carbon in environmental samples

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recommendations! Published in 2017 at "Radiocarbon"

DOI: 10.1017/rdc.2017.44

Abstract: ABSTRACT Compound-specific radiocarbon analysis (CSRA) of benzene polycarboxylic acids (BPCAs) yields molecular-level, source-specific information necessary to constrain isotopic signatures of pyrogenic carbon. However, the purification of individual BPCAs requires a multistep procedure that typically results… read more here.

Keywords: carbon; polycarboxylic acids; radiocarbon analysis; pyrogenic carbon ... See more keywords

THE CASTLE OF ACHANDUIN, LISMORE—A POINT OF REFERENCE FOR THE RADIOCARBON ANALYSIS OF MORTAR-ENTRAPPED RELICT LIMEKILN FUELS

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recommendations! Published in 2020 at "Radiocarbon"

DOI: 10.1017/rdc.2020.57

Abstract: ABSTRACT The results of a short program of landscape, buildings and materials analysis undertaken at Achanduin Castle, Lismore, Scotland (NM 8043 3927) are presented from the pilot phase of the Scottish Medieval Castles & Chapels… read more here.

Keywords: entrapped relict; relict limekiln; radiocarbon; radiocarbon analysis ... See more keywords

Biogenic carbonate samples: Preliminary tests on chemical protocols for radiocarbon analysis

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recommendations! Published in 2024 at "Radiocarbon"

DOI: 10.1017/rdc.2024.90

Abstract: Abstract Most of the carbonate samples have a basic well-defined pretreatment protocol for 14C-AMS dating, but particularities of specific organisms have to be treated with care. This is the case of stromatolite samples, in which… read more here.

Keywords: radiocarbon analysis; analysis; stromatolite samples; carbonate samples ... See more keywords

Improved Method for Isolation and Purification of Underivatized Amino Acids for Radiocarbon Analysis.

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recommendations! Published in 2018 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.8b02693

Abstract: We have improved a method for isolation and purification of individual amino acids for compound-specific radiocarbon analysis (CSRA). To remove high-performance liquid chromatography (HPLC) eluent blanks from isolated amino acid fractions prior to the radiocarbon… read more here.

Keywords: amino acids; method isolation; radiocarbon analysis; isolation purification ... See more keywords

Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies

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recommendations! Published in 2020 at "Paleoceanography and Paleoclimatology"

DOI: 10.1029/2020pa003890

Abstract: In Antarctic and Subantarctic environments, 14C‐based age determination is often challenging due to unknown reservoir effects, low organic carbon contents of sediments, and high contributions of petrogenic (14C‐free) carbon in ice marginal settings. In this… read more here.

Keywords: specific radiocarbon; compound specific; radiocarbon analysis; age ... See more keywords