Abstract
A fully automated microextraction by packed sorbents (MEPS) coupled with large volume injection gas chromatography–mass spectrometry (GC–MS) has been developed for the determination of eight polycyclic aromatic hydrocarbons (PAHs) in environmental water samples. Naphthalene (Nap), pyrene (Pyr), anthracene, acenaphthylene, phenanthrene, fluoranthene (Flr), fluorene and acenaphthene were the PAHs studied. The performance of the microextraction-GC–MS protocol was compared with solid phase extraction (SPE) and GC–MS analysis. Under optimized experimental conditions, the methods were linear for all analytes in the following ranges: 0.05–2.0μgL−1 (MEPS) and 0.25–10.0μgL−1 (SPE). The correlation coefficients (R2) were in the range 0.9965–0.9997 (MEPS) and 0.9978–0.9998 (SPE) for all the analytes. Limits of detection (LODs) for 2mL samples (MEPS) ranged from 0.8ngL−1 to 8.2ngL−1. LODs for 50mL samples (SPE) were between 4.8ngL−1 and 35.9ngL−1. The two methods were successfully applied to the determination of the 8 PAHs in environmental waters, with recoveries in the range of 70–117% (MEPS) and 72–134% (SPE) for a real spiked sample. The two sample preparation processes showed good repeatabilities with intra-day relative standard deviations below 14.0% (MEPS) and 14.6% (SPE). Nap, Flr and Pyr were found in a river water sample.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
