Liquid-liquid extraction in flow analysis: A critical review

• Tipo: Outra Publicação em Revista Científica Internacional
• Data: 2009

Autores

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

Revista

Título: Analytica Chimica Acta

Vol. 652 Nº 1

Páginas: 54-65

ISSN: 0003-2670

Editora: Elsevier

Indexação

ISI Web of Knowledge - 82 Citações

Scopus - 115 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12