adaf4ab7f59cca3036214419e3129ac4 chemproc_05_00008_v2.pdf 2a6a5657cbb4922ccedcc0e25a4c928dbf13bfec chemproc_05_00008_v2.pdf f27cba2b20b39602bf74ce00f4a4d07998c1ae1a4eb41b4a261501f1f22547ba chemproc_05_00008_v2.pdf Title: Tunable Electrochemical Sensors Based on Carbon Nanocomposite Materials towards Enhanced Determination of Cadmium, Lead and Copper in Water "2279 Subject: Many carbon materials are well-known conductive materials, widely used in the fabrication of composite electrodes. In this work, diverse allotropic forms of carbon such as graphite, MWCNTs and rGO were tested. Furthermore, these materials allow the construction of cheaper, smaller, portable, reliable and easy-to-use devices, which can be easily modified. The above-mentioned composite electrodes were developed for metal analysis in water such as Cu, Cd and Pb that, at a high concentration, can have consequences on human health. SWASV is the selected technique. It would be ideal to exploit the potential properties of mercury for metal detection by tuning the electrode’s surface. Due to mercury’s hazardous properties and to reduce the amount of this substance used in polarography, the use of nanoparticles is a good option due to their properties. Mercury nanoparticles were used to modify the surface of the composite electrodes to improve electroanalytical sensor response. For this reason, using these modified composite electrodes can lower detection limits and widen the linear range that can be achieved for Cd (0.05–1 mgL-1) and Pb (0.045–1 mgL-1). However, for Cu (0.114–1.14 mgL-1), meaningful variations were not observed compared to the bare electrode. Keywords: electrochemistry; Hg nanoparticles; graphite; composite electrodes; metal analysis; SWASV Author: Laia L. Fernández, Julio Bastos-Arrieta, Cristina Palet and Mireia Baeza Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Wed Dec 15 15:17:10 2021 CET ModDate: Wed Dec 15 15:27:21 2021 CET Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 7 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 2284561 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- AIQCCL+VnURWPalladioL-Bold Type 1 Custom yes yes no 10 0 SXQPWE+VnURWPalladioL Type 1 Custom yes yes no 15 0 OFRUNM+URWPalladioL-Ital Type 1 Custom yes yes no 19 0 DOYOXV+URWPalladioL-Bold Type 1 Custom yes yes no 24 0 YRRWDQ+URWPalladioL-Roma Type 1 Custom yes yes no 28 0 HHBSSZ+CMSY10 Type 1 Builtin yes yes no 32 0 MCBCCI+SourceSansRoman-Regular Type 1C Custom yes yes no 59 0 MCBCCM+SourceSansRoman.613wght Type 1C Custom yes yes no 63 0 MCBCCO+SourceSansRoman-Bold Type 1C Custom yes yes no 67 0 ULZEWH+MSBM10 Type 1 Builtin yes yes no 79 0 OVNEXW+EURM10 Type 1 Builtin yes yes no 86 0 BDFMHK+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 93 0 BDFMHL+PalatinoLinotype CID TrueType Identity-H yes yes yes 96 0 BDFMHM+PalatinoLinotype TrueType WinAnsi yes yes no 102 0 BDFMIN+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 105 0 BDFMHK+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 113 0 BDFMHL+PalatinoLinotype CID TrueType Identity-H yes yes yes 116 0 BDFMHM+PalatinoLinotype TrueType WinAnsi yes yes no 122 0 BDFMIN+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 125 0 BDFMHK+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 136 0 BDFMHL+PalatinoLinotype CID TrueType Identity-H yes yes yes 139 0 BDFMHM+PalatinoLinotype TrueType WinAnsi yes yes no 145 0 BDFMIN+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 148 0 BDFMHK+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 161 0 BDFMHL+PalatinoLinotype CID TrueType Identity-H yes yes yes 164 0 BDFMHM+PalatinoLinotype TrueType WinAnsi yes yes no 170 0 BDFMIN+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 173 0 Jhove (Rel. 1.22.1, 2019-04-17) Date: 2023-05-27 02:50:22 CEST RepresentationInformation: chemproc_05_00008_v2.pdf ReportingModule: PDF-hul, Rel. 1.12.1 (2019-04-17) LastModified: 2023-03-31 12:08:25 CEST Size: 2284561 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 249 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@44c8afef Item: Title: Composite Electrodes Construction, Characterization, and Modification Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7b69c6ba Children: Item: Title: Composite Electrode Construction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@46daef40 Item: Title: Composite Electrode Chacaterization Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@12f41634 Item: Title: Composite Electrode Modification with Hg-Nps Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@13c27452 Item: Title: Metal Solution Preparation and Determination Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@262b2c86 Item: Title: Bare Composite Electrodes Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@371a67ec Item: Title: Hg-NPs Drop Casted Electrodes Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@5ed828d Item: Title: Conclusions Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@50d0686 Item: Title: References Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7a3d45bd Info: Title: Tunable Electrochemical Sensors Based on Carbon Nanocomposite Materials towards Enhanced Determination of Cadmium, Lead and Copper in Water "2279 Author: Laia L. Fernández, Julio Bastos-Arrieta, Cristina Palet and Mireia Baeza Subject: Many carbon materials are well-known conductive materials, widely used in the fabrication of composite electrodes. In this work, diverse allotropic forms of carbon such as graphite, MWCNTs and rGO were tested. Furthermore, these materials allow the construction of cheaper, smaller, portable, reliable and easy-to-use devices, which can be easily modified. The above-mentioned composite electrodes were developed for metal analysis in water such as Cu, Cd and Pb that, at a high concentration, can have consequences on human health. SWASV is the selected technique. It would be ideal to exploit the potential properties of mercury for metal detection by tuning the electrode’s surface. Due to mercury’s hazardous properties and to reduce the amount of this substance used in polarography, the use of nanoparticles is a good option due to their properties. Mercury nanoparticles were used to modify the surface of the composite electrodes to improve electroanalytical sensor response. For this reason, using these modified composite electrodes can lower detection limits and widen the linear range that can be achieved for Cd (0.05 1 mgL-1) and Pb (0.045 1 mgL-1). However, for Cu (0.114 1.14 mgL-1), meaningful variations were not observed compared to the bare electrode. 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