前处理与测试条件差异对化石牙釉质羟磷灰石稳定同位素数据的影响：以步氏巨猿动物群为例

doi:10.19615/j.cnki.1000-3118.200109

古脊椎动物学报 ›› 2020, Vol. 58 ›› Issue (2): 159-168.DOI: 10.19615/j.cnki.1000-3118.200109

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前处理与测试条件差异对化石牙釉质羟磷灰石稳定同位素数据的影响：以步氏巨猿动物群为例

姜曲怡¹^,², 赵凌霞¹^,³^,^*(), 胡耀武⁴^,⁵^,¹^,²^,^*()

1 中国科学院古脊椎动物与古人类研究所,中国科学院脊椎动物演化与人类起源重点实验室北京 100044
2 中国科学院大学考古学与人类学系北京 100049
3 中国科学院生物演化与环境卓越创新中心北京 100044
4 复旦大学文物与博物馆学系上海 200433
5 复旦大学科技考古研究院上海 200433

收稿日期:2019-12-03 出版日期:2020-04-20 发布日期:2020-04-20
基金资助:
中国科学院战略性先导科技专项(B类)(XDB26000000);国家自然科学基金资助(41773008)

Isotopic (C, O) variations of fossil enamel bioapatite caused by different preparation and measurement protocols: a case study of Gigantopithecus fauna

JIANG Qu-Yi¹^,², ZHAO Ling-Xia¹^,³^,^*(), HU Yao-Wu⁴^,⁵^,¹^,²^,^*()

1 Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Beijing 100044
2 Department of Archaeology and Anthropology, University of Chinese Academy of Sciences Beijing 100049
3 CAS Center for Excellence in Life and Paleoenvironment Beijing 100044
4 Department of Cultural Heritage and Museology, Fudan University Shanghai 200433
5 Institute of Archaeological Science, Fudan University Shanghai 200433

Received:2019-12-03 Published:2020-04-20 Online:2020-04-20
Contact: ywhu@fudan.edu.cn
*zhaolingxia@ivpp.ac.cn;

摘要/Abstract

摘要：

牙釉质羟磷灰石的稳定同位素分析被广泛应用于古生物学研究之中,以重建古生态和古环境信息。在对不同研究中的同位素结果进行对比分析时,往往会忽略不同实验室、不同前处理方法可能引发的数据误差。为了探讨这些因素对牙釉质羟磷灰石同位素值的影响,重新测量了湖北省龙骨洞步氏巨猿动物群动物牙釉质样本的碳氧稳定同位素值,该批样本曾使用不同的前处理和实验方法进行过测试(Zhao et al., 2011;Nelson, 2014)。研究结果显示,重测的数据与Zhao et al. (2011)、Nelson (2014)发表的数据结果均存在一定差异。前处理方法与实验室测试差异都会造成牙釉质碳、氧稳定同位素结果的偏差。相较氧同位素而言,碳同位素值会更容易被前处理过程中反应试剂、反应时间等的不同所影响。但上述因素所导致的数据差异较小,不会对后续的分析产生实质性影响。本研究为直接对比不同来源牙釉质同位素值的可行性提供了初步的理论支持。建议为减少由于样品前处理和实验测试方案引发的数据误差,获得更加精确的研究结果,应尽可能采用同样的前处理与测试方案,多进行实验室间数据校正对比分析。

关键词: 牙釉质羟磷灰石, 稳定同位素分析, 羟磷灰石前处理, 同位素数据测量

Abstract:

Stable isotopic (C, O) analysis of fossil enamel bioapatite has been widely used in paleontological fields to reconstruct the paleoecology and paleoenvironment. It is common to compare the isotopic data of enamel bioapatite made by different pretreatment and measuring methods in different labs, without considering the isotopic variations possibly caused by different protocols. Here, we chose the same samples from Gigantopithecus fauna in the Longgu Cave (Longgudong), Hubei and remeasured their δ¹³C and δ¹⁸O values, which had been previously reported in Zhao et al. (2011) and Nelson (2014) with different pretreatment and measuring methods, in order to evaluate the effects of the above factors on the isotopic variability. The comparison among three isotopic dataset indicates that there did exist small isotopic variations on the δ ¹³C and δ ¹⁸O values. It seems that the δ ¹³C values were more influenced, probably due to differential practices to eliminate the diagenetic effects using varied chemicals and retaining reaction time during the process of bioapatite preparation. However, we should emphasize that the small isotopic variations observed here do not have produced substantial isotopic variance among fossil taxa and localities, providing the preliminarily theoretical foundation to make isotopic comparison directly. Even so, we still recommend that it is best to compare the isotopic data according to the same preparing and measuring protocols to remove the systematic errors or to re-measure samples again in different labs to calibrate the data.

Key words: fossil enamel bioapatite, stable isotope analysis, bioapatite pretreatment, isotopic measurements

中图分类号:

Q915.879

姜曲怡, 赵凌霞, 胡耀武. 前处理与测试条件差异对化石牙釉质羟磷灰石稳定同位素数据的影响：以步氏巨猿动物群为例. 古脊椎动物学报, 2020, 58(2): 159-168.

JIANG Qu-Yi, ZHAO Ling-Xia, HU Yao-Wu. Isotopic (C, O) variations of fossil enamel bioapatite caused by different preparation and measurement protocols: a case study of Gigantopithecus fauna. Vertebrata Palasiatica, 2020, 58(2): 159-168.

图/表 2

参考文献 28

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Number	Number (original)	Species	δ¹³C (our study)	δ¹³C (Nelson, 2014)	δ¹³C (Zhao et al., 2011)	δ¹⁸O (Nelson, 2014)	δ¹⁸O (our study)
1	1	Leptobos sp.	-15.4	-14.4	-15.8	-9.7	-9.9
2	2	Leptobos sp.	-15.2	-14.5	-15.4	-9.3	-9.6
3	3	Leptobos sp.	-16.7	-15.8	-17.1	-9.3	-9.6
4	4	Leptobos sp.	-15.0	-14.3	-15.3	-7.2	-7.2
5	5	Cervus sp.	-16.5	-15.5	-16.8	-5.7	-5.7
6	6	Cervus sp.	-17.4	-16.5	-17.8	-7.6	-7.7
7	7	Cervus sp.	-14.9	-14.1	-15.5	-6.4	-6.2
8	8	Tapirus sinensis	-15.9	-15.0	-16.6	-10.4	-10.1
9	9	Tapirus sinensis	-17.1	-16.2	-17.7	-10.9	-10.8
10	10	Tapirus sinensis	-15.6	-15.1	-16.3	-9.2	-9.4
11	11	Tapirus sinensis	-15.8	-15.7	-16.1	-12.2	-11.3
12	12	Rhinoceros sinensis	-14.0	-13.8	-14.4	-9.7	-10.0
13	13	Rhinoceros sinensis	-15.6	-15.3	-15.8	-10.0	-10.4
14	14	Rhinoceros sinensis	-14.6	-14.1	-14.9	-6.4	-6.1
15	15	Rhinoceros sinensis	-15.5	-15.2	-15.8	-9.4	-9.1
16	16	Pachycrocuta licenti	-13.8	-13.7	-14.1	-9.8	-9.1
17	18	Ailuropoda wulingshanensis	-17.9	-16.7	-18.3	-7.7	-7.2
18	23	Gigantopithecus blacki	-16.7	-15.6	-17.2	-9.4	-9.5
19	24	Gigantopithecus blacki	-15.4	-15.4	-15.9	-9.2	-9.2
20	25	Gigantopithecus blacki	-17.4	-16.6	-18.2	-8.1	-8.7
21	26	Gigantopithecus blacki	-13.7	-12.1	-14.2	-10.5	-9.5

Number	Number (original)	Species	δ¹³C (our study)	δ¹³C (Nelson, 2014)	δ¹³C (Zhao et al., 2011)	δ¹⁸O (Nelson, 2014)	δ¹⁸O (our study)
1	1	Leptobos sp.	-15.4	-14.4	-15.8	-9.7	-9.9
2	2	Leptobos sp.	-15.2	-14.5	-15.4	-9.3	-9.6
3	3	Leptobos sp.	-16.7	-15.8	-17.1	-9.3	-9.6
4	4	Leptobos sp.	-15.0	-14.3	-15.3	-7.2	-7.2
5	5	Cervus sp.	-16.5	-15.5	-16.8	-5.7	-5.7
6	6	Cervus sp.	-17.4	-16.5	-17.8	-7.6	-7.7
7	7	Cervus sp.	-14.9	-14.1	-15.5	-6.4	-6.2
8	8	Tapirus sinensis	-15.9	-15.0	-16.6	-10.4	-10.1
9	9	Tapirus sinensis	-17.1	-16.2	-17.7	-10.9	-10.8
10	10	Tapirus sinensis	-15.6	-15.1	-16.3	-9.2	-9.4
11	11	Tapirus sinensis	-15.8	-15.7	-16.1	-12.2	-11.3
12	12	Rhinoceros sinensis	-14.0	-13.8	-14.4	-9.7	-10.0
13	13	Rhinoceros sinensis	-15.6	-15.3	-15.8	-10.0	-10.4
14	14	Rhinoceros sinensis	-14.6	-14.1	-14.9	-6.4	-6.1
15	15	Rhinoceros sinensis	-15.5	-15.2	-15.8	-9.4	-9.1
16	16	Pachycrocuta licenti	-13.8	-13.7	-14.1	-9.8	-9.1
17	18	Ailuropoda wulingshanensis	-17.9	-16.7	-18.3	-7.7	-7.2
18	23	Gigantopithecus blacki	-16.7	-15.6	-17.2	-9.4	-9.5
19	24	Gigantopithecus blacki	-15.4	-15.4	-15.9	-9.2	-9.2
20	25	Gigantopithecus blacki	-17.4	-16.6	-18.2	-8.1	-8.7
21	26	Gigantopithecus blacki	-13.7	-12.1	-14.2	-10.5	-9.5

前处理与测试条件差异对化石牙釉质羟磷灰石稳定同位素数据的影响：以步氏巨猿动物群为例

Isotopic (C, O) variations of fossil enamel bioapatite caused by different preparation and measurement protocols: a case study of Gigantopithecus fauna

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