天然放射性碳同位素在海洋有机地球化学中的应用

doi:10.11867/j.issn.1001-8166.2002.03.0348

地球科学进展 ›› 2002, Vol. 17 ›› Issue (3): 348 -354. doi: 10.11867/j.issn.1001-8166.2002.03.0348

王旭晨 ¹，戴民汉 ²

1.美国麻省州立大学波士顿分校环境与海洋科学系，美国波士顿 02125； 2.厦门大学海洋环境科学教育部重点实验室环境科学研究中心，福建厦门361005

收稿日期:2001-05-10 修回日期:2001-08-22 出版日期:2002-12-20
通讯作者: 王旭晨(1955-)，男，山东人，教授，主要从事海洋有机地球化学及同位素地球化学研究.E-mail: xuchen.wang@umb.edu.cn E-mail:xuchen.wang@umb.edu.cn
基金资助:
国家杰出青年基金项目“珠江三角洲及其邻近的南海北部海域中碳的生物地化学循环研究——胶体在该循环中的显著作用”（编号：49825162）；国家自然科学基金项目“珠江口与南中国海北部胶体有机组成与结构表征”（编号：49976021）；教育部直属学校聘请外国专家重点项目“珠江口与南海北部海域二氧化碳的通量研究”（1999—2000年）；国家重点基础研究发展规划项目“地球圈层相互作用中的深海过程和深海记录”（编号：G2000078500）资助

THE APPLICATION NATURALLY OCCURRED RADIOCARBON ( ¹⁴C) IN MARINE ORGANIC GEOCHEMISTRY STUDIES

WANG Xu-chen ¹ , DAI Min-han ²

1. Environmental, Coastal and Ocean Sciences Department, University of Massachusetts at Boston, MA 02125, USA; 2. Key Laboratory for Marine Environmental Science of Ministry of Education/Environmental Science Research Center, Xiamen University, Xiamen 361005, China

Received:2001-05-10 Revised:2001-08-22 Online:2002-12-20 Published:2002-06-01

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天然放射性碳（¹⁴C）是年代测定的有效手段，它在考古学和地质学的应用已有几十年的历史。过去10年中，伴随着加速器质谱仪（AMS）技术和检测灵敏度的提高，AMS已经能够检测少于mg C量级样品中自然丰度水平的¹⁴C，这大大扩展了¹⁴ C在自然科学，特别是地球科学研究中的应用范畴。简要评述了利用天然¹⁴ C进行海洋地球化学研究的应用，重点介绍了前景广阔、并已取得显著成果的应用领域。

关键词: 放射性碳, 加速质谱仪（AMS）, 海洋有机地球化学

Naturally occurred radiocarbon (¹⁴C), as a powerful tool, has been used for decades for archeological and geological dating. Recent development and applications of Accelerator Mass Spectrometry (AMS) have made it possible to detect ¹⁴C at its natural abundance in very limited sample sizes (<mg C). This has greatly increased the range of applications using ¹⁴C in natural science, particularly in the Earth sciences. In this paper, we briefly reviewed the principal and some recent applications of using natural ¹⁴C in marine geochemical studies mainly in three areas:①¹⁴C studies of carbon cycling in the ocean; ②Using ¹⁴C as a tracer to determine the sources, transformation and turn over of the major organic compound classes in different organic carbon pools in the ocean; and ③¹⁴C studies of compound-specific biomarkers in marine sediments. These studies have shown novel results and demonstrated that natural radiocarbon measurements at compound level provide a new and sensitive tool for determining the sources, transformation and biogeochemical processes of carbon cycle in oceans in the past and at present both at large and small scales.

Key words: Radiocarbon, Accelerator mass spectrometry(AMS), Marine organic geochemistry.

中图分类号:

P736.4＋4

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THE APPLICATION NATURALLY OCCURRED RADIOCARBON ( 14C) IN MARINE ORGANIC GEOCHEMISTRY STUDIES

THE APPLICATION NATURALLY OCCURRED RADIOCARBON ( ¹⁴C) IN MARINE ORGANIC GEOCHEMISTRY STUDIES