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
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نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_AMECJ-4-1_006
تاریخ نمایه سازی: 14 آذر 1402
Abstract:
In this study, the mixture of nano activated carbon (NAC) and ionic
liquid (۳-triphenylphosphonio-propane-۱-sulfonate; C۲۱H۲۱O۳PS)
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 (۱.۰ g, n=۵۰) 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 ۱۰ min at ۸۰oC (۱۰ mg of NAC and ۰.۱ g of ionic
liquid in ۰.۵ 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 ۹۸.۵%
and ۱۲۷.۲ mg g-۱, 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.
Keywords:
Soil and vegetables , Nano activated carbon , Ionic liquid , Headspace solid phase micoextraction , Gas chromatography spectrometry
Authors
Afsaneh Afzali
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 ۷۴۸۳-۷۵۹۱۸, Yasouj, Iran