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Visakha Chunhakorn
Phitchayapa Ratchathamma
Harry J. Whitlow
Orapin Chienthavorn

2018-09-16T00:00:00Z

2018-09-16

A new simple and sensitive analytical technique based on polystyrene-divinyl benzene (PS-DVB) monolithic bead extraction followed by gas chromatography–mass spectroscopic detection (GC-MS) was developed for the determination of polycyclic aromatic hydrocarbons (PAHs) in water. The PS-DVB monolithic bead was fabricated and used as the adsorbent. The experimental parameters controlling the performance of the bead extraction were optimized. Calibration curves showed excellent linear fits, with r2 >0.995 for all PAHs in the 2–30,000 ng mL-1 range. The limits of detection (LODs) ranged from 0.01 to 0.47 ng mL-1. Recoveries of the PAHs in environmental water samples spiked at a concentration of 500 ng mL-1 were 72-109%, while they were 69-114% for water spiked at 20 ng mL-1. Both intraday and interday repeatabilities were high, with RSDs for 16 PAHs spiked standard solutions being less than 10%. The present study indicated that the proposed method is well suited for the quantification of PAHs in environmental and drinking water samples.

DOI: 10.1039/C8AY01562G

Thailand

Analytical chemistry