| 南海北部近海柱状沉积物多环芳烃组成及来源分析 |
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| 引用本文： | 高苑,夏嘉,司徒嘉杰,谭靖千,王思波,王遥平.南海北部近海柱状沉积物多环芳烃组成及来源分析[J].广东海洋大学学报,2021(2). |
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| 作者姓名： | 高苑 夏嘉 司徒嘉杰 谭靖千 王思波 王遥平 |
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| 作者单位： | 广东海洋大学化学与环境学院;南方海洋科学与工程广东省实验室（湛江）;广东海洋大学深圳研究院 |
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| 基金项目： | 国家自然科学基金(41802150);南方海洋科学与工程广东省实验室(湛江)项目(ZJW-2019-08);广东海洋大学“创新强校”资助项目(Q18301);广东海洋大学“冲一流”项目(231419029);广东海洋大学博士科研启动项目(R19004)。 |
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| 摘 要： | 【目的】研究南海北部近海区域柱状沉积物多环芳烃组成及分布特征,讨论全新世早期火历史及气候变化。【方法】利用AMS 14C定年技术结合有机地球化学分析手段对全新世早期南海北部近海沉积物柱状样品中多环芳烃(PAHs)分布特征进行研究。【结果】南海北部近海沉积物中16种PAHs总浓度范围为8.58~17.48 ng/g,在约10000 a B.P.的全新世早期呈现先增大后减小波动变化,与TOC变化基本同步。【结论】沉积物中多环芳烃主要来源于南海北部近海陆源区域自然火灾产生的焦炭残渣。PAHs的沉积浓度变化间接指示了全新世早期东亚季风的强度变化。
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| 关 键 词： | 南海北部 柱状沉积物 多环芳烃 全新世 火历史 |
Distribution and Source Identification of Polycyclic Aromatic Hydrocarbon of Core Sediments from Northern South China Sea |
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| GAO Yuan,XIA Jia,SITU Jia-jie,TAN Jing-qian,WANG Si-bo,WANG Yao-ping.Distribution and Source Identification of Polycyclic Aromatic Hydrocarbon of Core Sediments from Northern South China Sea[J].Journal of Zhanjiang Ocean University,2021(2). |
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| Authors: | GAO Yuan XIA Jia SITU Jia-jie TAN Jing-qian WANG Si-bo WANG Yao-ping |
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| Institution: | (College of Chemistry and Environmental Science,Guangdong Ocean University,Zhanjiang 510640,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhanjiang),Zhanjiang 524013,China;Shenzhen Research Institute of Guangdong Ocean University,Shenzhen 518018,China) |
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| Abstract: | 【Objective】This study investigates the characteristics of PAHs distribution and composition in Holocene sediments from the northern South China Sea.The relationship between PAHs concentration,fire history and climate was also discussed.【Method】The distributional characteristics of PAHs in core sediments from the South China Sea were analyzed using organic geochemistry method combined with the AMS 14C dating.【Result】About 10000 years ago in the early Holocene,PAH concentrations ranged from 8.58–17.48 ng/g,increased first and then decreased simultaneously with TOC value.【Conclusion】PAHs were mainly derived from char residues of biomass burning in the regional continental area near the northern South China Sea.The changes in PAHs concentration reflected the intensity variability of the East Asian summer monsoon. |
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| Keywords: | northern South China Sea core sediment polycyclic aromatic hydrocarbons Holocene fire history |
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