Hollow-fibre liquid-phase microextraction: A simple and fast cleanup step used for PAHs determination in pine needles

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Nuno Ratola (Autor) FEUP; Arminda Alves (Autor) FEUP; Nicolas Kalogerakis (Autor) Outra; Elefteria Psillakis (Autor) Outra

Revista

Título: Analytica Chimica Acta

Vol. 618 Nº 1

Páginas: 70-78

ISSN: 0003-2670

Editora: Elsevier

Indexação

ISI Web of Knowledge - 40 Citações

ISI Web of Science

Scopus - 48 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-003-YGG

DOI: 10.1016/j.aca.2008.04.054

Abstract (EN): traction (HF-LPME) is described here, used for the determination of 13 polycyclic aromatic hydrocarbons (PAHs) in complex pine needle samples. Initially, pine needle samples were sonicated in a 20 mL aqueous solution having a 20% (v:v) acetone content and 5 mL of the sonicated liquid extract was then used for the HF-LPME cleanup step. Different experimental parameters (namely: type of organic solvent used as acceptor phase, effect and type of co-solvent, salt addition, sample agitation and sampling time) were controlled and optimized based on the response of GC-MS instrument under the SIM mode. Under the optimized experimental conditions found the typical chromatograms obtained revealed that despite the very complex matrix of pine needles the HF-LPME cleanup step greatly reduced if not eliminated the presence of interferents, resulting in chromatograms which contained very cleanly separated and readily evaluable PAH peaks. In addition, the proposed method was found to be linear in the concentration 10-2000 ng g(-1) for most target analytes and the limits of detection for a S/N = 3 ranged between 0.01 and 0.95 ng g(-1) (dry weight). Furthermore, the repeatability and reproducibility were also found good. Finally, the proposed method was applied for the analysis of real pine needle samples taken for different parts of the island of Crete.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9