摘要
本文研究了有机吸附剂GDX-101,GDX-102,GDX-502富集大气中痕量有机污染物的超临界流体萃取方法,比较了三种吸附剂富集大气中有机物的主要成分及其超临界流体的萃取效率,并与索氏抽提法做了对比.结果表明,GDX-502吸附的有机物组分最多,超临界流体萃取对GDX-502的解吸效率也最高,对被GDX-502吸附的可以定量分析的35种有机物的平均回收率为84.5—108.9%,相对标准偏差为1.5—12.0%.
The analytical methods of the supercritical fluid extraction (SFE) desorping the organic pollutants absorbed and enriched by the organic adsorbents including GDX-101, GDX-102, GDX-502 from the air are studied in this paper. The organic components absorbed by GDX-101, GDX-102, GDX-502 and the efficiency of SFE of three samples are compared the recoveries of SFE are compared with Soxhlet extraction. The results indicate that the organic components absorbed by GDX-502 are more than those absorbed by the others. The efficiency of SFE of the organics absorbed by GDX 502 is superior to the others. The extraction efficiencies of SFE of 35 kinds of organics absorbed by GDX-502 are studied carefully, the mean recovery was in the range of 84. 5-108. 9%. The relative standard deviation is in the range of 1. 5-12. 0%.
出处
《环境化学》
CAS
CSCD
北大核心
1997年第3期284-289,共6页
Environmental Chemistry
关键词
大气
有机污染物
吸附剂
富集
GC-MS分析
air organic pollutants, organic adsorbents, enriching, supercritical fluid extraction, GC-MS analysis.
