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A tree-ring cellulose extraction device adapted to radiocarbon analysis

Published online by Cambridge University Press:  26 September 2024

Pengyu Lin
Affiliation:
School of Geography and Ocean Science, Nanjing University, Nanjing, Jiangsu, 210023, China
Yesi Zhao
Affiliation:
School of Geography and Ocean Science, Nanjing University, Nanjing, Jiangsu, 210023, China Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, Jiangsu, 210023, China
Hongyan Zhang*
Affiliation:
School of Geography and Ocean Science, Nanjing University, Nanjing, Jiangsu, 210023, China Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, Jiangsu, 210023, China
Thomas Wieloch
Affiliation:
Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå Plant Science Centre, Umeå, 90183, Sweden
Yao Gu
Affiliation:
School of Geography and Ocean Science, Nanjing University, Nanjing, Jiangsu, 210023, China
Chenghong Liang
Affiliation:
School of Geography and Ocean Science, Nanjing University, Nanjing, Jiangsu, 210023, China
Feng Chen
Affiliation:
Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security, Institute of International Rivers and Eco-Security, Yunnan University, Kunming, Yunnan, 650091, China
Huayu Lu*
Affiliation:
School of Geography and Ocean Science, Nanjing University, Nanjing, Jiangsu, 210023, China Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, Jiangsu, 210023, China
*
Corresponding authors: Hongyan Zhang; Email: hongyan@nju.edu.cn and Huayu Lu; Email: huayulu@nju.edu.cn
Corresponding authors: Hongyan Zhang; Email: hongyan@nju.edu.cn and Huayu Lu; Email: huayulu@nju.edu.cn

Abstract

Tree-ring cellulose is a commonly used material for radiocarbon analysis. Extracting cellulose is labor-consuming and several devices that enable batchwise extraction have been developed. However, these devices bear the risk of sample contamination. The present study describes a new device which improves upon two aspects of currently available devices. First, to prevent cross-sample-contamination, we redesigned the drainage module to enable independent removal of chemical waste from each individual sample funnel. Second, we added covers to the sample funnels to reduce the risk of external contamination. Cellulose purity (i.e., holocellulose) was confirmed by Fourier Transform Infrared (FTIR) Spectroscopy. Furthermore, accuracy of the radiocarbon analysis was confirmed by results of 14C-blank samples and samples of known age. In conclusion, while maintaining labor-saving, our modified device significantly reduces the risk of sample contamination during extraction of tree-ring cellulose.

Information

Type
Technical Note
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of University of Arizona

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