Optimization of stripping voltammetric sensor by mixture design-artificial neural network-genetic algorithm for determination of trace copper(II) based on iodoquinol-carbon nanotube modified carbon paste electrode

Review—Electrochemical Sensors and Biosensors Modified with Binary Nanocomposite for Food Safety

“…The introduction of nanomaterials into the field of electrochemical sensing has greatly promoted the development of electrochemical sensors and biosensors. [1][2][3][4][5] However, a single nanomaterial cannot meet all the needs of electrochemical detection, and there are certain defects, 6 for instance, the dispersion difficulty and easy reunion of metal nanoparticles in the polymer, the adhesion of carbon nanotubes, the curling and stacking of graphene lamellae, the agglomeration of quantum dots. The nanomaterials are usually functionalized or combined with some inorganic and organic functional materials to form the nanocomposite for practical applications.…”

Carbon Nanotubes Heavy Metal Detection with Stripping Voltammetry: A Review Paper

“…Other modifications with similar ideas for complexing target heavy metal ions with one or multiple complexing reagents for extracting are summarized in Table-3. However, even with the assistance of ion selective chemicals (shown in Table-3), the sensors can still encounter sufficient interferences, especially in more complex samples such as in blood and urine, making the analysis inaccurate [100]. The development and exploration of more selective and sensitive ion complexing reagents for specific sample analysis are still needed and requires more studies.…”

“…However, even with the assistance of ion selective chemicals (shown in Table -3), the sensors can still encounter sufficient interferences, especially in more complex samples such as in blood and urine, making the analysis inaccurate. [95] The development and exploration of more selective and sensitive ion complexing reagents for specific sample analysis are still needed and requires more studies. [62] MWCNT-GC PANI Pb ----2011 [63] MWCNT-SPE Chitosan/mineral oil Cd, Hg -Human urine/natural/ Waste water 6.6-168.6 ppb 1.3-16.6 ppb 1.1 ppb 0.48 ppb 2011 [64] MWCNT-CPE Schiff base Pb, Hg Yes Sea water/Shrimp/ human teeth 0.41-145.0 ppb 0.40-140.4 ppb 0.12 ppb 0.18 ppb 2012 [91] MWCNT-GC Ionophore Pb -River and tap water 0.3-50 ppb 0.1 ppb 2012 [86] MWCNT-CPE Cu-ion-imprinted polymer Cu -tap/well/ dam/riverwater/ human hair 2-20 ppb 0.34 ppb 2012 [47] MWCNT-GC (figure)…”

“…Pb -Tap water 0.21-6.2 ppb 0.21 ppb 2013 [100] MWCNT-Au Nafion Zn -Bovine serum 32.7-457.7 ppb 3.47 ppb 2013 [101] MWCNT-CPE Schiff base Cd -Various water samples/human hair/milk powder/fungi/tobacco 0.2-23 ppb 0.08 ppb 2014 [93] MWCNT-ITO Phytate Cu -River water 0.63-63.6 ppb 158.9 ppb 2014 [90] MWCNT-GC Nafion Eu --0.15-15.2 ppb 0.056 ppb 2014 [85] MWCNT-CPE Hydroxyapatite/ [dmIm][PF6]IL Pb -Oil field water 0.27-2072 ppb 0.004 ppb 2014 [102] MWCNT-Pt Nafion/ P1,5-DAN Pb, Cd Yes River water 4-150 ppb 2.1 ppb 3.2 ppb 2015 [103] MWCNT-CPE Schiff base Cu -River water 0.09-340 ppb 0.01 ppb 2015 [94] CNF-GC Nafion Pb, Cd Yes --0.19 ppb 0.31 ppb 2015 [104] MWCNT-pyrolytic graphite Salicylaldehyde azine/Nafion Cu -River water 0.32-19.1 ppb 0.064 ppb 2015 [105] MWCNT-CPE ACABP Ag -Tap/well/waste water/tea leafs 0.5-270 ppb 0.079 ppb 2015 [106] MWCNT-GC Poly(PCV)/Bi Pb, Cd Yes Tap/well water 1-200 ppb 1-300 ppb 0.4 ppb 0.2 ppb 2015 [107] MWCNT-GC BiOCl/Nafion Pb, Cd Yes Sediment pore water 5-50 ppb 0.57 ppb 1.2 ppb 2015 [108] SWCNT-Au PABS/ DMAET Hg -Waste water 20-250 ppb 12.0 ppb 2016 [109] MWCNT-CPE iodoquinol Cu -Oil and tap water 0.64-317.8 ppb 0.32 ppb 2016 [95] MWCNT-GC β-CD/Nafion/Bi Pb, Cd Yes Soil 1-100 ppb 0.13 ppb 0.21 ppb 2016 [110] GN-hyxCNTs-CPE -Cu -Pond water 1.3-705.4 ppb 0.6 ppb 2016 [111] 1.98-7.06 ppm [112] PANI: polyanilineβ-CD: β-cyclodextrin; DMF: dimethylformamide; ; PPh3: Triphenyl phosphine; [dmIm][PF6]IL: 1-dodecyl-3-methylimidazolium hexafluoro phosphate ionic liquid; P1,5-DAN (poly(1,5-diaminonaphthalene)); ACABP: N_(4_{4_[(anilinocarbothioyl)amino]benzyl}phenyl)_N_phenylthiourea; PABS: poly (m-amino benzene sulfonic acid); DMAET: dimethyl amino ethane thiol…”

Comparative study of mesopourous silica obtained by different synthetic routes to improve the analysis of Cu(II) in sugar cane spirit

“…Thus, it is expected that this specific material will improve the electrode to trigger, either by electrostatic attraction or complexation, a redox reaction. For copper detection, the use of various materials such as functionalized polymers, drugs, fibers and silicas immobilized on carbon paste electrodes have been studied [13][14][15][16]. The literature reports a series of functionalized mesoporous materials for the removal and detection of copper ions as well as the development of new optical and electrochemical sensors [17][18][19].…”