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Supercritical fluid extraction combined with ultrasound-assisted dispersive liquid–liquid microextraction for analyzing alkylphenols in soil samples

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Abstract

Supercritical fluid extraction combined with ultrasound-assisted dispersive liquid–liquid followed by gas chromatography with mass spectrometric detection was developed to analyze alkylphenols in soil samples. Various parameters that affected the extraction recovery (such as ultrasonic time, pressure, temperature, modifier volume, and extraction time) were evaluated. The best results were achieved at ultrasonic time of 4 min, a pressure of 300 atm, a temperature of 60 °C, a dynamic extraction time of 30 min, and 100 µL methanol spiking. Under optimum conditions, good linearity was obtained in the range of 0.02–5.0 mg kg−1, and the limits of detection (LODs) were 0.010 mg kg−1 for all of the analytes. The extraction recovery of four alkylphenols at a spiked level of 2.5 mg kg−1 was in the range of 84.69–88.75 %. The performance of the present method was evaluated for the analysis of four alkylphenols in three real soil samples, and satisfactory results were obtained (RSDs < 6.75 %).

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Authors and Affiliations

  1. Department of Applied Chemistry, Faculty of Chemistry, Shahid Beheshti University, G.C., P.O. Box 19839-4716, Tehran, Iran

    Behnaz Daneshvand & Farhad Raofie

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  1. Behnaz Daneshvand
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  2. Farhad Raofie
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Correspondence to Farhad Raofie.

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Daneshvand, B., Raofie, F. Supercritical fluid extraction combined with ultrasound-assisted dispersive liquid–liquid microextraction for analyzing alkylphenols in soil samples. J IRAN CHEM SOC 12, 1287–1292 (2015). https://doi.org/10.1007/s13738-015-0593-0

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  • DOI: https://doi.org/10.1007/s13738-015-0593-0

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