Liquid-liquid extraction in flow analysis: A critical review

• Type: Another Publication in an International Scientific Journal
• Date: 2009

Authors

Cristina I C Silvestre (Author) Other; Joao L M Santos (Author) FFUP; Jose L F C Lima (Author) FFUP; Elias A G Zagatto (Author) Other

Journal

Title: Analytica Chimica Acta

Vol. 652 No. 1

Pages: 54-65

ISSN: 0003-2670

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 82 Citations

Scopus - 115 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-003-F28

DOI: 10.1016/j.aca.2009.05.042

Abstract (EN): Liquid-liquid extractions (LLE) area common sample pre-treatment in many analytical applications. This review aims at providing a critical overview of the distinct automated continuous flow-based approaches that were developed for liquid-liquid extraction with the purpose of pre-concentration and/or separation of multiple analytes, such as ultra-trace metal and metalloid species. phenolic compounds, surfactants, pharmaceuticals, etc., hyphenated with many detection technique such as UV/vis spectrophotometry, atomic spectrometric detection systems and luminescent detectors, including distinct extraction strategies and applications like single and multiple extraction schemes, wetting film extraction, supported liquid membrane extraction, back extraction, closed-loop systems and the utilisation of zone sampling, chromatomembranes and iterative reversal techniques.The analytical performance of the developed flowbased LLE methods and the influence of flow manifold components such as the segmenter, extraction coil and phase separator, is emphasised and object of discussion. An overall presentation of each system components. selectivity, advantages and shortcomings is carried out and exemplified with selected applications.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12