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

This work illustrates the improvement in ultra-trace Hg(II) determination water based on a novel flexible extraction and preconcentration technique (FEPT). method focuses covalent functionalisation of carbon fibre (CF) (3-mercaptopropyl)trimethoxysilane. The CF is carried out two steps: functionalising surface using acid treatment to obtain hydroxy carboxyl groups surface, followed by condensation reaction between or (CF-OH) (3-mercaptopropyl)trimethoxysilane form mercapto-CF (CF-SH). FTIR, EDX, SEM, XRD UV-Vis were utilised confirm modification. ICP-MS determine assess influence memory effect results Au3+ solution suspended Au nanoparticles (Au-NPs). result shows that Au-NPs improve detection eliminate effect. study also includes appropriate parameters for contact time, eluent solution, pH, foreign metal ions factor. As result, thiol-CF high uptake, flexibility, stability during analysis process, with recovery 98.96% ± 0.41% 10 factors. These features make FEPT valuable extracting pollutants overcoming problems associated such samples.