摘要
自Eglinton等(1996)首次将单体放射性碳同位素分析技术(CSRA)应用于海洋沉积物中生物标志物14C研究以来,该技术发展迅速,广泛应用于海洋科学、生物地球化学和古气候学等领域。但是,自然环境样品中生物标志物大多含量低、干扰基质复杂而且难以分离。因此,如何从基质组成复杂的样品中分离富集高纯度的目标化合物已经成为限制CSRA技术发展和应用的瓶颈。近些年来,不断改进的色谱分离富集技术不仅提高了目标化合物分离的纯度和回收效率,同时也扩展了生物标志物的碳同位素示踪应用。综合介绍了自然环境研究中单体化合物放射性碳同位素分析技术中常见生物标志物单体分离纯化的技术方法以及发展现状。
Eglinton (1996) firstly performed the Compound-Specific Radiocarbon Analysis (CSRA) in marine sediments, providing a new approach to understanding the organic carbon source. The applications of CSRA tech- nique were developed rapidly and widely used in oceanography, biogeochemistry and paleoclimatology. However, because of the extremely low amount and interference with complex substrates, mostly source-specific biomarkers were hard to be separated from environmental matrix samples. Therefore, how to harvest pure biomarkersl from complex natural sample matrixes, has been the limitation of CSRA technique, especially for ultra-small size CSRA. Recently, various preparative chromatography techniques have been carried out to improve the purity and recovery efficiency of the target compounds. This paper aimed to introduce the techniques and applications of CSRA for com- mon source-specific biomarkers in the natural environment.
出处
《地球科学进展》
CAS
CSCD
北大核心
2017年第11期1193-1203,共11页
Advances in Earth Science
基金
国家海洋局第三海洋研究所科研业务费专项资金资助项目"有机(生物)标志物技术对海洋气溶胶来源示踪的研究"(编号:海三科2017013)
国家自然科学基金项目"利用分子生物标志物--14C技术重建全新世黄海沉积有机质组成变化"(编号:41506087)资助~~
关键词
单体放射性碳同位素
生物标志物
制备气相色谱
制备液相色谱
Compound-Specific Radiocarbon Analysis (CSRA)
Biomarkers
Preparative Capillary Gas Chro- matography(PCGC)
Prep-HPLC