Membrane Extraction in Preconcentration, Sampling, and Trace Analysis

Authored by: Jan Åke Jönsson , Estelle Larsson

Handbook of Membrane Separations

Print publication date:  April  2015
Online publication date:  April  2015

Print ISBN: 9781466555563
eBook ISBN: 9781466555587
Adobe ISBN:

10.1201/b18319-15

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Abstract

The use of membranes for extraction in analytical chemistry has been increasing during recent years. The main intention is to selectively extract and enrich compounds to be determined (analytes) from chemically more or less complex samples. In contrast to many technical uses of membranes, in analytical applications, it is imperative to recover as efficiently as possible the extracted analytes so they can be transferred to suitable analytical instruments for the final determination in a quantitative way. Another difference from technical uses is that the volume scale is small; extracts are seldom larger than a milliliter, often only several microliters.

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