CARBON-DIOXIDE SUPERCRITICAL-FLUID EXTRACTION WITH ONLINE FLUORESCENCE DETECTION

被引：5

作者：

DUNHAM, DC ^{[1
]}

DESMARAIS, MS ^{[1
]}

BREID, T ^{[1
]}

HILLS, JW ^{[1
]}

机构：

[1] WASHINGTON STATE UNIV TRI CITY,RICHLAND,WA 99352

来源：

ANALYTICAL LETTERS | 1995年 / 28卷 / 14期

关键词：

SUPERCRITICAL FLUID EXTRACTION; FLUORESCENCE SPECTROSCOPY;

D O I：

10.1080/00032719508004035

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An HPLC detector was modified to operate as a low pressure on-line supercritical fluid extraction detector. Spectra of CO2 and fluorene are presented of pressures ranging from 85 to 150 atm. Bath the intensity and emission wavelength of fluorene were effected by CO2 pressure. As pressure increased, the emission intensity also increased and the emission shifted to a shorter wavelength. The intensity of CO2 emission decreased by increasing pressure. The emission wavelength of CO2 was unaffected by pressure. A detection limit for fluorene was found to be 5 mu g per extraction. The minimal detectable mass was 25 mu g (+/- 8% RSD) per extraction.

引用

页码：2561 / 2574

页数：14

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