Journal
CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING, PTS 1-4
Volume 838-841, Issue -, Pages 2582-2585Publisher
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/AMR.838-841.2582
Keywords
polycyclic aromatic hydrocarbons; Capillary Gas Chromatography; Single-drop Microextraction; Wastewater
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This study describes an analytical method employing capillary gas chromatography (GC) using flame ionization detection (FID) that has been developed for the simultaneous determination of polycyclic aromatic hydrocarbons (PAHs) in wastewater, including naphthalene, 1-naphthol, 2-naphthol and anthracene. For this purpose, single-drop microextraction (SDME) was applied as a sample preparation technique. The SDME parameters such as types of extractants, volume of the microdroplet size, extraction time, stir rate and immersion depth of needle point were investigated and optimized. The method was linear in the ranges from 2.3 x 10(-3) to 70.0 mu gmL(-1) for naphthalene, 1-naphthol and anthracene, and 2.2 x 10(-3) to 50.0 for 2-naphthol with R-2 >= 0.9990. The SDME procedure allowed efficient recovery of the inveStigated PAHs ranging between 94 % and 104 % with a relative standard deviation (RSD) <= 4.2 for actual wastewater sampes spiked with 5, 10 and 20 mu g.mL(-1) of PAHs, respectively. These results showed the potential of this technique for PAHs monitoring in wastewater samples. Furthermore, the investigated methods are simple, reliable, reproducible, and not expensive.
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