Simultaneous Extraction and Concentration by On-Line Hollow Fiber Membrane Extraction

Document Type

Article

Publication Date

11-15-2003

Abstract

In the determination of trace-level pollutants in water, a concentration step is usually needed between extraction and analysis. In this paper, simultaneous extraction and concentration during on-line analysis using hollow fiber membranes is reported. Solvent loss across the membrane resulted in simultaneous concentration during extraction and had pronounced influence on enrichment factor and extraction efficiency. This phenomenon is an important consideration for analytical methods employing solvent extraction across a membrane, because it is possible to eliminate the concentration step. Continuous on-line monitoring of semivolatile compounds was achieved using this approach, and the effects of process variables on enrichment and extraction efficiency were studied. It was found that enrichment increased with solvent loss, even when the extraction efficiency decreased.

Identifier

0242653687 (Scopus)

Publication Title

Analytical Chemistry

External Full Text Location

https://doi.org/10.1021/ac030071r

ISSN

00032700

First Page

6355

Last Page

6360

Issue

22

Volume

75

This document is currently not available here.

Share

COinS