ON LINE MONITORING OF THE SUPERCRITICAL-FLUID EXTRACTION PROCESS WITH PROTON NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY

被引：25

作者：

BRAUMANN, U

HANDEL, H

ALBERT, K

ECKER, R

SPRAUL, M

机构：

[1] UNIV TUBINGEN,INST ORGAN CHEM,D-72076 TUBINGEN,GERMANY

[2] HEWLETT PACKARD GMBH,D-76337 WALDBRONN,GERMANY

[3] BRUKER ANALYT MESSTECH GMBH,D-76287 RHEINSTETTEN,GERMANY

来源：

ANALYTICAL CHEMISTRY | 1995年 / 67卷 / 05期

关键词：

D O I：

10.1021/ac00101a021

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Supercritical fluid extraction (SFE) is performed with carbon dioxide as eluent, and the extraction process is monitored with H-1 MMR spectroscopy as the detection technique. It is shown that the extraction process can be easily controlled with the information provided by the NMR spectra. Normal conditions for the SFE concerning pressure and now rate can be applied. Spectra are recorded in the continuous-now and stopped-now mode; 2D spectra can be acquired. The possibilities are demonstrated by monitoring the extraction of roasted coffee and of black pepper.

引用

页码：930 / 935

页数：6

共 17 条

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