Carbon nanotube-based benzyl polymethacrylate composite monolith as a solid phase extraction adsorbent and a stationary phase material for simultaneous extraction and analysis of polycyclic aromatic hydrocarbon in water

Asma'a Al-Rifai, Ahmad Aqel, Lamya Al Wahibi, Zeid A. ALOthman, Ahmed Yacine Badjah-Hadj-Ahmed

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

A composite of multi-walled carbon nanotubes incorporated into a benzyl methacrylate-co-ethylene dimethacrylate porous monolith was prepared, characterized and used as solid phase adsorbent and as stationary phase for simultaneous extraction and separation of ten polycyclic aromatic hydrocarbons, followed by nano-liquid chromatography analysis. The extraction and chromatographic parameters were optimized with regard to the extraction efficiency and the quality of chromatographic analytes separation. Under the optimized conditions, all PAHs were separated in 13 min with suitable resolution values (Rs = 1.74-3.98). Addition of a small amount of carbon nanotubes (0.1% with respect to monomers) to the polymerization mixture increased the efficiency for the separation column to over 41,700 plates m-1 for chrysene at flow rate of 0.5 μL min-1. The method showed a wide linear range (1-500 μg L-1 with R2 more than 0.9938), acceptable extraction repeatability (RSDs < 6.4%, n = 3) and reproducibility (RSDs < 12.6%, five parallel-made solid phase extraction cartridges) and satisfactory detection limits (0.02-0.22 μg L-1). Finally, the proposed method was successfully applied to the detection of polycyclic aromatic hydrocarbons in environmental water samples. After a simple extraction procedure with preconcentration factor equal to 100, the average recovery values in ultra-pure, tap and sea water samples were found to be in the range 81.3-95.4% with %RSD less than 6.4. Again, the presence of carbon nanotubes (0.3% relatively to monomers) in native polymer enhanced the extraction performance for the solid phase adsorbent up to 78.4%. The application of the monoliths modified with CNTs in extraction and nano-scale liquid chromatography for analysis of environmental samples offered several advantages; it demonstrated an acceptable precision, low detection limits, good reproducibility, satisfying recoveries and wide dynamic linear ranges.

Original languageEnglish
JournalJournal of Chromatography A
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

Carbon Nanotubes
Polycyclic Aromatic Hydrocarbons
Solid Phase Extraction
Adsorbents
Liquid Chromatography
Limit of Detection
Water
Composite materials
Seawater
Polymerization
Liquid chromatography
Polymers
Monomers
Recovery
polymethacrylic acid
Polycyclic aromatic hydrocarbons
Flow rate

Keywords

  • Benzyl methacrylate
  • Carbon nanotubes
  • Nano-liquid chromatography
  • PAH pollutants
  • Polymer-based monolith
  • Solid-phase extraction

Cite this

@article{ec496578838c4221adbd576c7d54e1d1,
title = "Carbon nanotube-based benzyl polymethacrylate composite monolith as a solid phase extraction adsorbent and a stationary phase material for simultaneous extraction and analysis of polycyclic aromatic hydrocarbon in water",
abstract = "A composite of multi-walled carbon nanotubes incorporated into a benzyl methacrylate-co-ethylene dimethacrylate porous monolith was prepared, characterized and used as solid phase adsorbent and as stationary phase for simultaneous extraction and separation of ten polycyclic aromatic hydrocarbons, followed by nano-liquid chromatography analysis. The extraction and chromatographic parameters were optimized with regard to the extraction efficiency and the quality of chromatographic analytes separation. Under the optimized conditions, all PAHs were separated in 13 min with suitable resolution values (Rs = 1.74-3.98). Addition of a small amount of carbon nanotubes (0.1{\%} with respect to monomers) to the polymerization mixture increased the efficiency for the separation column to over 41,700 plates m-1 for chrysene at flow rate of 0.5 μL min-1. The method showed a wide linear range (1-500 μg L-1 with R2 more than 0.9938), acceptable extraction repeatability (RSDs < 6.4{\%}, n = 3) and reproducibility (RSDs < 12.6{\%}, five parallel-made solid phase extraction cartridges) and satisfactory detection limits (0.02-0.22 μg L-1). Finally, the proposed method was successfully applied to the detection of polycyclic aromatic hydrocarbons in environmental water samples. After a simple extraction procedure with preconcentration factor equal to 100, the average recovery values in ultra-pure, tap and sea water samples were found to be in the range 81.3-95.4{\%} with {\%}RSD less than 6.4. Again, the presence of carbon nanotubes (0.3{\%} relatively to monomers) in native polymer enhanced the extraction performance for the solid phase adsorbent up to 78.4{\%}. The application of the monoliths modified with CNTs in extraction and nano-scale liquid chromatography for analysis of environmental samples offered several advantages; it demonstrated an acceptable precision, low detection limits, good reproducibility, satisfying recoveries and wide dynamic linear ranges.",
keywords = "Benzyl methacrylate, Carbon nanotubes, Nano-liquid chromatography, PAH pollutants, Polymer-based monolith, Solid-phase extraction",
author = "Asma'a Al-Rifai and Ahmad Aqel and Wahibi, {Lamya Al} and ALOthman, {Zeid A.} and Badjah-Hadj-Ahmed, {Ahmed Yacine}",
year = "2018",
month = "1",
day = "1",
doi = "10.1016/j.chroma.2018.01.011",
language = "English",
journal = "Journal of Chromatography A",
issn = "0021-9673",
publisher = "Elsevier",

}

Carbon nanotube-based benzyl polymethacrylate composite monolith as a solid phase extraction adsorbent and a stationary phase material for simultaneous extraction and analysis of polycyclic aromatic hydrocarbon in water. / Al-Rifai, Asma'a; Aqel, Ahmad; Wahibi, Lamya Al; ALOthman, Zeid A.; Badjah-Hadj-Ahmed, Ahmed Yacine.

In: Journal of Chromatography A, 01.01.2018.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Carbon nanotube-based benzyl polymethacrylate composite monolith as a solid phase extraction adsorbent and a stationary phase material for simultaneous extraction and analysis of polycyclic aromatic hydrocarbon in water

AU - Al-Rifai, Asma'a

AU - Aqel, Ahmad

AU - Wahibi, Lamya Al

AU - ALOthman, Zeid A.

AU - Badjah-Hadj-Ahmed, Ahmed Yacine

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A composite of multi-walled carbon nanotubes incorporated into a benzyl methacrylate-co-ethylene dimethacrylate porous monolith was prepared, characterized and used as solid phase adsorbent and as stationary phase for simultaneous extraction and separation of ten polycyclic aromatic hydrocarbons, followed by nano-liquid chromatography analysis. The extraction and chromatographic parameters were optimized with regard to the extraction efficiency and the quality of chromatographic analytes separation. Under the optimized conditions, all PAHs were separated in 13 min with suitable resolution values (Rs = 1.74-3.98). Addition of a small amount of carbon nanotubes (0.1% with respect to monomers) to the polymerization mixture increased the efficiency for the separation column to over 41,700 plates m-1 for chrysene at flow rate of 0.5 μL min-1. The method showed a wide linear range (1-500 μg L-1 with R2 more than 0.9938), acceptable extraction repeatability (RSDs < 6.4%, n = 3) and reproducibility (RSDs < 12.6%, five parallel-made solid phase extraction cartridges) and satisfactory detection limits (0.02-0.22 μg L-1). Finally, the proposed method was successfully applied to the detection of polycyclic aromatic hydrocarbons in environmental water samples. After a simple extraction procedure with preconcentration factor equal to 100, the average recovery values in ultra-pure, tap and sea water samples were found to be in the range 81.3-95.4% with %RSD less than 6.4. Again, the presence of carbon nanotubes (0.3% relatively to monomers) in native polymer enhanced the extraction performance for the solid phase adsorbent up to 78.4%. The application of the monoliths modified with CNTs in extraction and nano-scale liquid chromatography for analysis of environmental samples offered several advantages; it demonstrated an acceptable precision, low detection limits, good reproducibility, satisfying recoveries and wide dynamic linear ranges.

AB - A composite of multi-walled carbon nanotubes incorporated into a benzyl methacrylate-co-ethylene dimethacrylate porous monolith was prepared, characterized and used as solid phase adsorbent and as stationary phase for simultaneous extraction and separation of ten polycyclic aromatic hydrocarbons, followed by nano-liquid chromatography analysis. The extraction and chromatographic parameters were optimized with regard to the extraction efficiency and the quality of chromatographic analytes separation. Under the optimized conditions, all PAHs were separated in 13 min with suitable resolution values (Rs = 1.74-3.98). Addition of a small amount of carbon nanotubes (0.1% with respect to monomers) to the polymerization mixture increased the efficiency for the separation column to over 41,700 plates m-1 for chrysene at flow rate of 0.5 μL min-1. The method showed a wide linear range (1-500 μg L-1 with R2 more than 0.9938), acceptable extraction repeatability (RSDs < 6.4%, n = 3) and reproducibility (RSDs < 12.6%, five parallel-made solid phase extraction cartridges) and satisfactory detection limits (0.02-0.22 μg L-1). Finally, the proposed method was successfully applied to the detection of polycyclic aromatic hydrocarbons in environmental water samples. After a simple extraction procedure with preconcentration factor equal to 100, the average recovery values in ultra-pure, tap and sea water samples were found to be in the range 81.3-95.4% with %RSD less than 6.4. Again, the presence of carbon nanotubes (0.3% relatively to monomers) in native polymer enhanced the extraction performance for the solid phase adsorbent up to 78.4%. The application of the monoliths modified with CNTs in extraction and nano-scale liquid chromatography for analysis of environmental samples offered several advantages; it demonstrated an acceptable precision, low detection limits, good reproducibility, satisfying recoveries and wide dynamic linear ranges.

KW - Benzyl methacrylate

KW - Carbon nanotubes

KW - Nano-liquid chromatography

KW - PAH pollutants

KW - Polymer-based monolith

KW - Solid-phase extraction

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U2 - 10.1016/j.chroma.2018.01.011

DO - 10.1016/j.chroma.2018.01.011

M3 - Article

JO - Journal of Chromatography A

JF - Journal of Chromatography A

SN - 0021-9673

ER -