超临界CO_2萃取在环境样品预处理中的应用  

Application of Supercritical Carbon Dioxide Extraction in Environmental Sample Pretreatment

作　　者：张继荣[1] 陈玲[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《环境监测管理与技术》2003年第2期10-13,共4页The Administration and Technique of Environmental Monitoring

摘　　要：阐述了超临界流体萃取的原理和特点,分析了温度、压力、流体流速、改性剂、络合剂等因素对萃取过程的影响,介绍了超临界CO_2萃取技术的优点及其在萃取土壤中的有机污染物、非固体介质中的污染物、环境样品中的金属离子等方面的应用,对该技术的应用前景作了展望。Techniques of supercritical carbon dioxide extraction, which were applied to environmental sample pre-treatment developed in recent years, were systematically introduced. It not only extracts pollutants in solid samples such as soil, but also extracts pollutants in water and air collected and concentrated by absorbents. The advantages of the SFE are described and its prospect of future application is made.

关 键 词：超临界CO2萃取 环境样品 预处理 温度 压力 流体流速 

分 类 号：X830.1[环境科学与工程—环境工程] O652.6[理学—分析化学]