Abstract

In this work, partition equilibriums and extraction rates of different polycyclic aromatic hydrocarbons (PAHs) have been calculated by multivariate nonlinear regression from data obtained after microextraction by packed sorbent (MEPS) of 16 PAHs from water samples. The MEPS gas chromatography-mass spectrometry (MEPS-GC-MS) method has been optimized investigating the partitioning parameters for a priori prediction of solute sorption equilibrium, recoveries, pre-concentration effects in aqueous and solvent systems. Finally, real samples from sea, agricultural irrigation wells, streams and tap water were analyzed. Detection (S/N ≥ 3) and quantification (S/N ≥ 10) limits were strictly dependent on the volume of water and methanol used during the extraction process. Under the experimental conditions used, these values range from 0.5 to 2 ng L^(-1) and from 1.6 to 6.2 ng L^(-1), respectively. The reasonably good correlation between the logarithm of the partition MEPS-water constants (log K_(meps/water) ) and the logarithm of the octanol-water partition coefficients (log K_(ow) ) (R^2 = 0.807) allows a rough estimation of K ow from the measure of K_(meps/water).

Autore Pugliese

• Amodio Pierluigi

Tutti gli autori

• AMODIO P.

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2012

ISSN

0021-9673

ISBN

Non Disponibile

Numero di citazioni Wos

10

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

10

Ultimo Aggiornamento Citazioni

Non Disponibile

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile