Hollow fibre liquid phase microextraction of parabens |
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Authors: | Aleksandra Prichodko Kristina Jonusaite Vida Vickackaite |
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Institution: | (1) Department of Analytical and Environmental Chemistry, Vilnius University, LT-03225 Vilnius, Lithuania |
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Abstract: | A hollow fibre liquid phase microextraction for gas chromatographic determination of some p-hydroxybenzoic acid esters has
been developed. Chlorobenzene containing tetradecane as internal standard was used for the extraction. Optimized extraction
was carried out at room temperature for 40 min in the presence of 0.4 g mL−1 NaCl in the sample solution. Calibration was linear up to 30 mg L−1. Correlation coefficients were 0.996–0.998. Enrichment factors were 21, 95 and 154, and detection limits were 0.20, 0.03
and 0.01 μg mL−1 for methylparaben, ethylparaben and propylparaben, respectively. Reproducibility was acceptable with relative standard deviations
up to 11.7%. The technique was tested for water and urine analysis.
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Keywords: | Hollow fibre liquid phase microextraction Gas chromatography Parabens |
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