RADIOCARBON DATING OF HIGHLY DEGRADED AND PROBLEMATIC FOSSIL WOOD: VERIFICATION OF THE EFFECTIVENESS OF VARIOUS PREPARATION METHODS

被引：1

作者：

Jedrzejowski, Maksymilian ^{[1
]}

Michczynska, Danuta J. ^{[1
]}

Klusek, Marzena ^{[1
]}

Michczynski, Adam ^{[1
]}

Pawelczyk, Fatima ^{[1
]}

Piotrowska, Natalia ^{[1
]}

Heeb, Karin Wyss ^{[2
,3
]}

Hajdas, Irka ^{[2
]}

机构：

[1] Silesian Tech Univ, Inst Phys, CSE, Konarskiego 22B, PL-44100 Gliwice, Poland

[2] Lab Ion Beam Phys, ETHZ, Otto-Stern-Weg 5, CH-8093 Zurich, Switzerland

[3] Bern Univ Appl Sci, HKB, CH-3027 Bern, Switzerland

来源：

RADIOCARBON | 2024年 / 66卷 / 05期

关键词：

alpha-cellulose; C-14; fossil wood; FTIR; holocellulose; wood pretreatment methods; CELLULOSE-PREPARATION; PRETREATMENT PROTOCOLS; TREE-RINGS; C-14; EXTRACTION; INCREASE; FACILITY; MICADAS; FTIR;

D O I：

10.1017/RDC.2024.49

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

This paper compares various wood pretreatment methods for highly degraded, and problematic fossil wood extracted from the opencast Szczerc & oacute;w site of the Be & lstrok;chat & oacute;w Lignite Mine in Central Poland. The study evaluates the pretreatment methods using both large samples (55-255 g, referred to as series A) and small samples (36-150 mg, referred to as series B). Additionally, all preparation methods were applied to medium-sized samples (approximately 3 g, referred to as series C) with solvent washes in the Soxhlet apparatus. Radiocarbon dating was conducted using the LSC technique (subseries A(1)) and the AMS technique (subseries A(2), series B, and C). The effectiveness and utility of each pretreatment protocol were compared based on C-14 measurements and FTIR analysis. Through the conducted research and a multi-criteria analysis, the most effective method for preparing old fossil wood was identified. Our experience indicates that an extended, multistage preparation of highly degraded fossil wood samples, with a C-14 concentration near the detection limit of the radiocarbon method, may result in a significant increase in C-14 content.

引用

页码：1182 / 1199

页数：18

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