Benzene extraction in environmental samples based on the mixture of nanoactivated carbon and ionic liquid coated on fused silica fiber before determination by headspace solid-phase microextraction-gas chromatography

Volume 4, Issue 01, Pages 68-785, Mar 2021 *** Field: Analytical Chemistry

  • Afsaneh Afzali, (Corresponding Author) Department of Environment, Faculty of Natural Resources and Earth Sciences, University of Kashan, Kashan, Iran
  • Hossein Vahidi Department of Environment, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
  • Saeed Fakhraie Chemistry Department, Yasouj University, P.O. Box 75918-7483, Yasouj, Iran
Keywords: Benzene, Soil and vegetables, Nano activated carbon, Ionic liquid, Headspace solid phase micoextraction, Gas chromatography spectrometry


In this study, the mixture of nano activated carbon (NAC) and ionic liquid (3-triphenylphosphonio-propane-1-sulfonate; C21H21O3PS) was coated on fused silica fiber of SPME holder (NAC-IL-FSF/SPME). Then NAC/IL was used for determining of benzene in soil and vegetables samples (1.0 g, n=50) surrounding a chemical industry zone. After benzene adsorption on NAC-IL based on head space solid phase micoextraction (HS-SPME), the concentration of benzene was simply determined by introducing probe to injector of gas chromatography with flame-ionization detection (GC-FID). All effected parameters such as the sorbent mass, the amount of sample, the temperature, and the interaction time were optimized in glass chromatography vials by static procedures. The benzene vapor was absorbed from soil and vegetables samples with NAC-IL-FSF/SPME holder for 10 min at 80oC (10 mg of NAC and 0.1 g of ionic liquid in 0.5 mL of acetone coated on FSF). Then the benzene was desorbed and determined by GC-FID spectrometry. The extraction efficiency and absorption capacity of adsorbent were obtained 98.5% and 127.2 mg g-1, respectively. The high surface area of NAC and favorite interaction of aromatic chain in IL (π-π), caused to efficiently remove of benzene vapor by HS-SPME procedure as compared to other nanostructures.


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How to Cite
Afzali, A., Vahidi, H., & Fakhraie, S. (2021). Benzene extraction in environmental samples based on the mixture of nanoactivated carbon and ionic liquid coated on fused silica fiber before determination by headspace solid-phase microextraction-gas chromatography. Analytical Methods in Environmental Chemistry Journal, 4(01), 68-78.
Original Article