COMPREHENSIVE SUPERCRITICAL-FLUID EXTRACTION GAS-CHROMATOGRAPHIC ANALYSIS OF ORGANIC-COMPOUNDS IN SOIL MATRICES WITH AN ELEMENT-SELECTIVE RADIOFREQUENCY PLASMA DETECTOR

被引：16

作者：

WU, MG ^{[1
]}

LIU, ZY ^{[1
]}

FARNSWORTH, PB ^{[1
]}

LEE, ML ^{[1
]}

机构：

[1] BRIGHAM YOUNG UNIV,DEPT CHEM,PROVO,UT 84602

来源：

ANALYTICAL CHEMISTRY | 1993年 / 65卷 / 17期

关键词：

D O I：

10.1021/ac00065a004

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A coupled supercritical fluid extraction (SFE), high-speed gas chromatography (GC), and element-selective radiofrequency plasma detection (RPD) system was evaluated for the analysis of volatile organic compounds in soil matrices. The effect of GC carrier gas (carbon dioxide) and plasma reagent gas (oxygen) on the selectivity and sensitivity of the RPD was studied to establish the optimal operational conditions. The selectivities obtained were 3500 (Cl/C) for chlorine and 2600 (S/C) for sulfur. The detection limits were 24.8 and 9.2 pg s-1 for chlorine and sulfur, respectively. Complete quantitative analysis could be easily accomplished within 10 min. These results indicate that the RPD can substantially enhance the analytical utility of on-line SFE/high-speed GC for the analysis of selected target analytes in environmental samples.

引用

页码：2185 / 2188

页数：4

共 15 条

[11] RADIO-FREQUENCY PLASMA DETECTOR FOR SULFUR SELECTIVE CAPILLARY GAS-CHROMATOGRAPHIC ANALYSIS OF FOSSIL-FUELS [J].