Abstract
A simple, rapid and efficient method termed dispersive liquid–liquid microextraction combined with liquid chromatography-fluorescence detection, has been developed for the extraction and determination of polycyclic aromatic hydrocarbons (PAHs) in water and fruit juice samples. Parameters such as the kind and volume of extraction solvent and dispersive solvent, extraction time and salt effect were optimized. Under optimum conditions, the enrichment factors ranged from 296 to 462. The linear range was 0.01–100 μg L−1 and limits of detection were 0.001–0.01 μg L−1. The relative standard deviations (RSDs, for 5 μg L−1 of PAHs) varied from 1.0 to 11.5% (n = 3). The relative recoveries of PAHs from tap, river, well and sea water samples at spiking level of 5 μg L−1 were 82.6–117.1, 74.9–113.9, 77.0–122.4 and 86.1–119.3%, respectively. The relative recoveries of PAHs from grape and apple juice samples at spiking levels of 2.5 and 5 μg L−1 were 80.8–114.7 and 88.9–123.0%, respectively. It is concluded that the proposed method can be successfully applied for determination of PAHs in water and fruit juice samples.
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This work was jointly funded by Key Project of Wenzhou City (S20060023) and Analyzing and Testing Foundation of Zhejiang Province (2008F70062).
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Zhao, X., Fu, L., Hu, J. et al. Analysis of PAHs in Water and Fruit Juice Samples by DLLME Combined with LC-Fluorescence Detection. Chroma 69, 1385–1389 (2009). https://doi.org/10.1365/s10337-009-1099-7
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DOI: https://doi.org/10.1365/s10337-009-1099-7