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Article

A Functionalised Carbon Fiber for Flexible Extraction and Determination of Hg(II) Using Au(NP)-Thiol-CF Inductively Coupled Plasma Mass Spectrometry

1
Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
2
King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia
*
Author to whom correspondence should be addressed.
Academic Editor: Huan Feng
Water 2021, 13(13), 1829; https://doi.org/10.3390/w13131829
Received: 24 May 2021 / Revised: 23 June 2021 / Accepted: 29 June 2021 / Published: 30 June 2021
(This article belongs to the Section Wastewater Treatment and Reuse)
This work illustrates the improvement in ultra-trace Hg(II) determination in water based on a novel flexible extraction and preconcentration technique (FEPT). This method focuses on the covalent functionalisation of carbon fibre (CF) based on (3-mercaptopropyl)trimethoxysilane. The functionalisation of CF is carried out in two steps: functionalising the surface of CF using acid treatment to obtain hydroxy and carboxyl groups on the surface, followed by a condensation reaction between the carboxyl or hydroxy groups on the carbon (CF-OH) and (3-mercaptopropyl)trimethoxysilane to form mercapto-CF (CF-SH). FTIR, EDX, SEM, XRD and UV-Vis were utilised to confirm the modification. ICP-MS is utilised to determine the Hg(II) and to assess the influence of the memory effect on the results using Au3+ solution and suspended Au nanoparticles (Au-NPs). The result shows that the Au-NPs improve Hg(II) detection and eliminate the memory effect. This study also includes appropriate parameters for contact time, eluent solution, pH, and the foreign metal and ions preconcentration factor. As a result, thiol-CF shows high Hg(II) uptake, flexibility, and stability during the analysis process, with a recovery of 98.96% ± 0.41% for 10 preconcentration factors. These features make FEPT a valuable method for extracting pollutants and overcoming the problems associated with the analysis of such samples. View Full-Text
Keywords: thiol; carbon fibres; mercury; ICP-MS; Hg2+; memory effect thiol; carbon fibres; mercury; ICP-MS; Hg2+; memory effect
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MDPI and ACS Style

Bin Ateeq, M.K.; Bin Durayhim, N.M.; Sulayem, M.M.; Al-Qahtani, W.A.; Khdary, N.H.; Alhassan, A.M.; Alzahrani, F.M.A.; Katubi, K.M.M.; Alsaiari, N.S. A Functionalised Carbon Fiber for Flexible Extraction and Determination of Hg(II) Using Au(NP)-Thiol-CF Inductively Coupled Plasma Mass Spectrometry. Water 2021, 13, 1829. https://doi.org/10.3390/w13131829

AMA Style

Bin Ateeq MK, Bin Durayhim NM, Sulayem MM, Al-Qahtani WA, Khdary NH, Alhassan AM, Alzahrani FMA, Katubi KMM, Alsaiari NS. A Functionalised Carbon Fiber for Flexible Extraction and Determination of Hg(II) Using Au(NP)-Thiol-CF Inductively Coupled Plasma Mass Spectrometry. Water. 2021; 13(13):1829. https://doi.org/10.3390/w13131829

Chicago/Turabian Style

Bin Ateeq, Mashael K., Nouf M. Bin Durayhim, Meral M. Sulayem, Waad A. Al-Qahtani, Nezar H. Khdary, Ahmed M. Alhassan, Fatimah M.A. Alzahrani, Khadijah M.M. Katubi, and Norah S. Alsaiari 2021. "A Functionalised Carbon Fiber for Flexible Extraction and Determination of Hg(II) Using Au(NP)-Thiol-CF Inductively Coupled Plasma Mass Spectrometry" Water 13, no. 13: 1829. https://doi.org/10.3390/w13131829

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