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Graphite-epoxy composite electrodes

Fig. 7.4. DPASV curves obtained with a graphite-epoxy composite electrode for increasing concentration of Cd, Pb, and Cu along with the corresponding calibration curves (inset). The cell composition was 25 mL 0.1 N HC1 the reference electrode Ag/AgCl counter electrode Pt accumulation potential —1.4V racc 60s step potential 0.0024V modulation time 0.05s interval time 0.2 s. Adapted from Ref. [35]. Fig. 7.4. DPASV curves obtained with a graphite-epoxy composite electrode for increasing concentration of Cd, Pb, and Cu along with the corresponding calibration curves (inset). The cell composition was 25 mL 0.1 N HC1 the reference electrode Ag/AgCl counter electrode Pt accumulation potential —1.4V racc 60s step potential 0.0024V modulation time 0.05s interval time 0.2 s. Adapted from Ref. [35].
SPMBE = screen-printed microband electrode, ASV = anodic stripping voltammetry, HCMV = human cytomegalovirus, PGE = pencil-graphite electrode, DPV = differential pulse voltammetry, SPEs = screen-printed electrodes, PSA = potentiometric stripping analysis, M-GECE = magnetic graphite-epoxy composite electrode. [Pg.947]

Determination of lead and cadmium in tap water and soils by stripping analysis using mercury-free graphite-epoxy composite electrodes... [Pg.1012]

Fig. 49.2. Microchip electrophoregram of 20 ppm 1,3,5-TNB, 2,4,6-TNT, 2,4-DNT, and 2,6-DNT. Detection electrode graphite-epoxy composite electrode separation buffer 15 mM borate buffer (pH 9.2, containing 20 mM SDS) separation voltage 1500 V injection voltage 1500 V injection time 5 s detection potential —0.5 V. Fig. 49.2. Microchip electrophoregram of 20 ppm 1,3,5-TNB, 2,4,6-TNT, 2,4-DNT, and 2,6-DNT. Detection electrode graphite-epoxy composite electrode separation buffer 15 mM borate buffer (pH 9.2, containing 20 mM SDS) separation voltage 1500 V injection voltage 1500 V injection time 5 s detection potential —0.5 V.
Fig. 53.1. Details of magnetic graphite-epoxy composite electrode with incorporated magnet, (a) Conducting graphite-epoxy composite (b) copper disc facilitating electrical contact between the composite material and copper wire (c) leading to the electrochemical workstation (d) plastic sleeve (e) permanent neodymium magnet. With permission from Ref. [1]. Fig. 53.1. Details of magnetic graphite-epoxy composite electrode with incorporated magnet, (a) Conducting graphite-epoxy composite (b) copper disc facilitating electrical contact between the composite material and copper wire (c) leading to the electrochemical workstation (d) plastic sleeve (e) permanent neodymium magnet. With permission from Ref. [1].
Fig. 53.2. DPV hybridization response of 2.5 pg mL-1 of BC-T on magnetic graphite-epoxy composite electrode. Conditions amount of paramagnetic beads, 50 pg amount of AuNPs, 9x 1012 hybridization time, 15 min hybridization temperature, 42°C oxidation potential, + 1.25 V oxidation time, 120 s DPV scan from + 1.25 V to 0 V step potential, 10 mV modulation amplitude, 50 mV scan rate, 33.5 mVs-1 non-stirred solution. With permission from Ref. [3]. Fig. 53.2. DPV hybridization response of 2.5 pg mL-1 of BC-T on magnetic graphite-epoxy composite electrode. Conditions amount of paramagnetic beads, 50 pg amount of AuNPs, 9x 1012 hybridization time, 15 min hybridization temperature, 42°C oxidation potential, + 1.25 V oxidation time, 120 s DPV scan from + 1.25 V to 0 V step potential, 10 mV modulation amplitude, 50 mV scan rate, 33.5 mVs-1 non-stirred solution. With permission from Ref. [3].
Fig. 53.4. Histogram that shows the current intensities of DPV peaks obtained for the hybridization responses of 8 pgmL-1 of target associated with cystic fibrosis (T), single-base mismatch (MX-1), three-base mismatch (MX-3), and non-complementary DNA (NC) on magnetic graphite-epoxy composite electrode. Error bars show the mean and the standard deviations of the measurements taken from three independent experiments. Conditions Hybridization temperature, 25°C amount of MB, 100 pg. Other conditions as in Fig. 53.2. With permission from Ref. [3]. Fig. 53.4. Histogram that shows the current intensities of DPV peaks obtained for the hybridization responses of 8 pgmL-1 of target associated with cystic fibrosis (T), single-base mismatch (MX-1), three-base mismatch (MX-3), and non-complementary DNA (NC) on magnetic graphite-epoxy composite electrode. Error bars show the mean and the standard deviations of the measurements taken from three independent experiments. Conditions Hybridization temperature, 25°C amount of MB, 100 pg. Other conditions as in Fig. 53.2. With permission from Ref. [3].
Differential pulse voltammetry is used for a direct voltammetric detection of AuNPs onto magnetic graphite-epoxy composite electrode (GECE-M). [Pg.129]

Pumera,M.,Aldavert,M.,Mills, C.,Merkofi, A., and Alegret, S. (2005) Direct voltam-metric determination of gold nanoparticles using graphite-epoxy composite electrodes. Electrochim. Acta, 50, 3702-3707... [Pg.144]

Magnetic Graphite-Epoxy Composite Electrode (GECE-M) Construction... [Pg.148]

Pauliukaite, R., Ghica, M.E., Fatibello-FUho, O., Brett, C.M.A. A comparative study of different crosslinking agents for the immobilization of functionalized carbon nanotubes within a chitosan film supported on a graphite-epoxy composite electrode. Anal. Chem. 81, 5364-5372 (2009)... [Pg.126]

Adsorbed onto paraffin impregnated graphite Immobilized as diamminete-tra(isothiocyanato) chromates (Reineckates) in graphite-epoxy composite electrodes Immobilized in electro polymerized 1,2-,1,3-,... [Pg.5402]

Flow-injection amperometric determination of ascorbic acid using a graphite-epoxy composite electrode modified with cobalt phthalocyanine. Iran J. Ghent. Ghent. Eng. 20 66-74. [Pg.354]

Pauliukaite, R., et al.. Comparative Study of Different Cross-Linking Agents for the Immobilization of Functionalized Carbon Nanotubes within a Chitosan Film Supported on a Graphite-Epoxy Composite Electrode. Analytical Chemistry, 2009. 57(13) p. 5364-5372. [Pg.223]

Kirgoz UA, Odaci D, Timur S, Merkofi A, Pazarlioglu N, Telefoncu A, Alegret S (2006) Graphite epoxy composite electrodes modified with bacterial cells. Bioelectrochemistry 69... [Pg.311]

Kirgbz UA, Marin S, Pumera M, Merkofi A, Alegret S (2005) Stripping voltammetry with bismuth modified graphite-epoxy composite electrodes. Electroanalysis 17 881-886... [Pg.458]

Ocana, C., Pacios, M., del VaUe, M., 2012. A reusable impedimetric aptasensor for detection of thrombin employing a graphite-epoxy composite electrode. Sensors 12, 3037-3048. [Pg.400]

See other pages where Graphite-epoxy composite electrodes is mentioned: [Pg.146]    [Pg.158]    [Pg.405]    [Pg.407]    [Pg.949]    [Pg.1012]    [Pg.1013]    [Pg.1286]    [Pg.1313]    [Pg.292]    [Pg.127]    [Pg.117]    [Pg.437]    [Pg.5395]    [Pg.303]    [Pg.95]    [Pg.390]   
See also in sourсe #XX -- [ Pg.699 ]



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