[PDF] Top 20 Voltammetric determination of MCPA, 4-chloro-o-cresol and o-cresol in water using a modified carbon paste electrode

... Carbon paste electrodes modified with Norit SX-2 activated carbon and SBA-15 mesoporous silica were applied for the determination of the MCPA herbicide and the main intermediates ... See full document

... Except carbon nanotubes, all chemicals used in this study were of analytical grade (Merck or Sigma Aldrich) and were used without further ...purification. Carbon nanotubes were made using spray ... See full document

... The voltammetric experiments were performed in an electrochemical assembly with a platinum wire as the counter electrode, a glassy carbon electrode (3 mm diameter) as working electrode ... See full document

... All chemicals used were of analytical quality. Cobalt phthalocyanine, phosphoric acid, potassium phosphate monobasic, potassium hydroxide, graphite powder and paraffin oil were from Sigma Aldrich and were used as ... See full document

... DCF determination, including potentiometry [4], high performance liquid chromatography [5], capillary zone electrophoresis [6], thin layer chromatography [7], spectrofluorometry [8], gas chromatography [9] ... See full document

... Carbon paste electrode (CPE) is a special kind of heterogeneous carbon electrode that is a mixture of carbon powder (as graphite, glassy carbon and others carbonaceous ... See full document

... Modified carbon nanotube paste electrodes were prepared by dissolve ...of carbon nanotube with a mortar and ...spiked carbon nanotube powder and paraffin oil was blended by hand mixing ... See full document

... mV for various concentrations of DA (Fig.4). For an electroactive material (DA in this case) with a diffusion coefficient of D, the current for the electrochemical reaction (at a mass transport limited rate) is ... See full document

... surface electrode is first immersed in ...without electrode re- generation and two standard solutions of nitrite are added sequen- ...new electrode, the ex- periment is repeated with new activation ... See full document

... All solutions were freshly prepared with double distilled water. NE, AC, FCD and all other reagents were of analytical grade from Merck (Darmstadt, Germany). Graphite powder and paraffin oil (DC 350, density = ... See full document

... The voltammetric results showed well defined anodic peaks at potentials of 480 and 800 mV, corresponding to the oxidation of MDOP and HCTZ, ...simultaneous determination of these compounds is feasible at ... See full document

... grade carbon powder obtained from E- Merck, India limited was used as received for the prepa- ration of the ...the Carbon Paste Electrode The spectroscopic grade carbon powder was ... See full document

... a carbon paste electrode modified with 1,1-BPF and NiO/CNTs has been utilized for voltammetric determination of HX in water ...the determination of HX in ... See full document

... ferrocene modified carbon nanotubes paste electrode (FCMCNTPE) was constructed and used as a fast and sensitive tool for the determination of N-acetylcysteine (NAC) at trace ...the ... See full document

... method using portable instrumentation for field screening of lead in whole blood was described in another ...technique using a hollow fibre-supported sol-gel combined with multi-walled carbon ... See full document

... Cyclic voltammetry (CV), chronoamperommetry, and differential pulse voltammetry (DPV) were performed in an analytical system, Autolab with PGSTAT 12 (Eco Chemie B. V., Utrecht, and The Netherlands). The system was run on ... See full document

... the determination of boron in various ...electrochemical voltammetric methods have been also used for the determination of ...electrochemical voltammetric methods. The existing ... See full document

... voltammograms of BCNTGMPE and SDSMCNTGMPE, containing 1 M KCl and 1 mM potassium ferrocyanide. The SDSMCNTGMPE exhibited a characteristic increase of the peak for ferrocyanide represents the successful modification. ... See full document

... The urine samples were stored in a refrigerator immediately after collection. Ten milliliters of the sample was centrifuged for 10 min at 2000 rpm. The supernatant was filtered using a 0.45 μm filter and then ... See full document

... The voltammetric determination of pyridoxine was successfully conducted by SWV using CoHCF modified carbon paste ...the modified carbon paste ... See full document