环境有机地球化学初探

PRELIMINARY STUDY ON ENVIRONMENTAL ORGANIC GEOCHEMISTRY

从分子有机地球化学与全球变化以及有毒有害难降解有机化合物的表生地球化学作用两个方面，探讨了环境地学与有机地球化学学科分支新领域──环境有机地球化学所研究的主要内容。文中列举了两个研究实例，一是应用分子标志物方法研究了北京、贵阳和广州三城市大气飘尘可溶有机质组成的成因；另一例是在广州市大气飘尘、水和底泥样品中鉴定出属于美国ＥＰＡ优先控制的有毒有害有机污染物，并探讨了这些毒害有机物在环境中气、液、固界面间可能存在的表生地球化学过程。

One of the new branches of environmental geoscience and organic geochemistryis environmental organic geochemistry, of which two major aspects have been discussed,including molecular organic geochemistry and supergenic geochemistry of priority organicpollutants. Two case studies have been introduced briefly. origin of extract compositionof aerosol samples collected from Beijing. Guiyang and Guangzhou has been discussed bymeans of molecular organic geochemistry. A research project on distribution of priorityorganic compounds in aerosol. water and sediment samples of Guangzhou region has beenconducted, resulting in general idea about reactions between priority organic compoundsand multiphase, including environmental atmosphere, water and sediment phases.