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A functionalized multiwalled carbon nanotube (MWCNT)-coated solid-phase microextraction (SPME) fiber was developed for concentrating analytes in aqueous samples. Sodium deoxycholate(NaDC) was used as a wrapping layer for non-covalent modification of MWCNTs. Non-covalent bonding between the MWCNTs and sodium deoxycholate changed the electrical and steric resistance of the MWCNTs, and improved their solubility and dispersibility. To investigate the capability of this MWCNTs/NaDC SPME fiber, it was applied to the analysis of phenols in aqueous solution. After extraction, the analytes were desorbed in an acetonitrile–water solution and analyzed using high-performance liquid chromatography. The MWCNTs/NaDC fiber exhibited a response two to six times that of a commercial fiber for phenols. The hydrogen interactions with the analytes and the large surface area of the MWCNTs facilitated analyte adsorption with good selectivity and reproducibility. Under the optimum extraction conditions, the MWCNTs/NaDC fiber had a good linear range (1–100 ng/mL), repeatability for the extractions (relative standard deviation = 4.9%–7.1%, n = 3), low limits of detection (0.15–0.30 ng/mL), and satisfactory recoveries (80.3%–95.4%). This is an accurate and cost-effective pretreatment method.
Keywords
Functionalized multiwalled carbon nanotube; Solid-phase microextraction; Surfactant; Phenol
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Received 28 Oct, 2019
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On 10 Oct, 2019
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Review #1 received
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Reviewer #1 agreed
On 18 Aug, 2019
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Learn more about In Review
Research article
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
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Peer Review Timeline
CURRENT STATUS: Published
View the published article at BMC Chemistry.
No community comments so far
Editor assigned
On 23 Jan, 2020
Submission checks complete
On 22 Jan, 2020
Editor invited
On 22 Jan, 2020
No comments provided
Editorial decision: Minor revision
On 17 Jan, 2020
Reviewers invited
Invitations sent on 19 Dec, 2019
Editor assigned
On 10 Dec, 2019
Submission checks complete
On 09 Dec, 2019
Editor invited
On 09 Dec, 2019
No comments provided
Editorial decision: Major revision
On 04 Dec, 2019
Review #1 received
Received 26 Nov, 2019
Reviewer #1 agreed
On 19 Nov, 2019
Reviewers invited
Invitations sent on 19 Nov, 2019
Editor assigned
On 18 Nov, 2019
Submission checks complete
On 17 Nov, 2019
Editor invited
On 17 Nov, 2019
Version 1
Posted 21 Aug, 2019
No comments provided
Editorial decision: Major revision
On 01 Nov, 2019
Review #2 received
Received 30 Oct, 2019
Review #3 received
Received 28 Oct, 2019
Review #4 received
Received 28 Oct, 2019
Reviewer #4 agreed
On 13 Oct, 2019
Reviewer #3 agreed
On 10 Oct, 2019
Reviewer #2 agreed
On 09 Oct, 2019
Review #1 received
Received 02 Sep, 2019
Reviewer #1 agreed
On 18 Aug, 2019
Reviewers invited
Invitations sent on 14 Aug, 2019
Submission checks complete
On 09 Aug, 2019
Editor assigned
On 09 Aug, 2019
Editor invited
On 08 Aug, 2019
First submitted
On 14 Jul, 2019
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Materials Chemistry
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at BMC Chemistry.
A functionalized multiwalled carbon nanotube (MWCNT)-coated solid-phase microextraction (SPME) fiber was developed for concentrating analytes in aqueous samples. Sodium deoxycholate(NaDC) was used as a wrapping layer for non-covalent modification of MWCNTs. Non-covalent bonding between the MWCNTs and sodium deoxycholate changed the electrical and steric resistance of the MWCNTs, and improved their solubility and dispersibility. To investigate the capability of this MWCNTs/NaDC SPME fiber, it was applied to the analysis of phenols in aqueous solution. After extraction, the analytes were desorbed in an acetonitrile–water solution and analyzed using high-performance liquid chromatography. The MWCNTs/NaDC fiber exhibited a response two to six times that of a commercial fiber for phenols. The hydrogen interactions with the analytes and the large surface area of the MWCNTs facilitated analyte adsorption with good selectivity and reproducibility. Under the optimum extraction conditions, the MWCNTs/NaDC fiber had a good linear range (1–100 ng/mL), repeatability for the extractions (relative standard deviation = 4.9%–7.1%, n = 3), low limits of detection (0.15–0.30 ng/mL), and satisfactory recoveries (80.3%–95.4%). This is an accurate and cost-effective pretreatment method.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
This is a list of supplementary files associated with this preprint. Click to download.
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