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C-14 DATING OF SOIL ORGANIC CARBON (SOC) IN LOESS-PALEOSOL USING SEQUENTIAL PYROLYSIS AND ACCELERATOR MASS SPECTROMETRY (AMS)
Cheng, P (Cheng, Peng)[ 1,2 ]; Zhou, WJ (Zhou, Weijian)[ 1,2,3 ]; Wang, H (Wang, Hong)[ 4 ]; Lu, XF (Lu, Xuefeng)[ 1,2,3 ]; Du, H (Du, Hua)[ 1,2 ]
2013
Source PublicationRADIOCARBON
Volume55Issue:2-3Pages:563-570
Subtype期刊论文
Abstract

The chemical extraction of soil organic carbon (SOC) fractions from soils often does not produce satisfactory results for radiocarbon dating. In this study, a sequential pyrolysis technique was investigated. The soil was pyrolyzed at temperatures of 200, 400, 600, and 800 degrees C to partition organic carbon into pyrolytic volatile (Py-V) and pyrolytic residue (Py-R) fractions. The preliminary results show that the C-14 dates of both fractions become progressively older as the pyrolysis temperature is increased. In addition, the ages of the Py-V fractions are consistently younger than the corresponding Py-R fractions extracted at the same temperature. Experimental results of known-age paleosol samples indicate that the Py-V fractions obtained between 600 and 800 degrees C yield the most reliable ages. This technique provides a new approach to improve the accuracy of C-14 dating of loess-paleosol sequences.

Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9902
Collection加速器质谱中心
Corresponding AuthorCheng, P (Cheng, Peng)[ 1,2 ]
Affiliation1.State Key Lab Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710075, China;
2.Shaanxi Province Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Institute of Earth Environment, CAS, Xi’an 710043, China;
3.Xi’an Jiaotong University, Xi’an 710049, China;
4.Illinois State Geological Survey, Prairie Research Institute, University of Illinois, Champaign, Illinois 61820, USA
Recommended Citation
GB/T 7714
Cheng, P ,Zhou, WJ ,Wang, H ,et al. C-14 DATING OF SOIL ORGANIC CARBON (SOC) IN LOESS-PALEOSOL USING SEQUENTIAL PYROLYSIS AND ACCELERATOR MASS SPECTROMETRY (AMS)[J]. RADIOCARBON,2013,55(2-3):563-570.
APA Cheng, P ,Zhou, WJ ,Wang, H ,Lu, XF ,&Du, H .(2013).C-14 DATING OF SOIL ORGANIC CARBON (SOC) IN LOESS-PALEOSOL USING SEQUENTIAL PYROLYSIS AND ACCELERATOR MASS SPECTROMETRY (AMS).RADIOCARBON,55(2-3),563-570.
MLA Cheng, P ,et al."C-14 DATING OF SOIL ORGANIC CARBON (SOC) IN LOESS-PALEOSOL USING SEQUENTIAL PYROLYSIS AND ACCELERATOR MASS SPECTROMETRY (AMS)".RADIOCARBON 55.2-3(2013):563-570.
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