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An electrochemical strategy to determine thiosulfate, 4-chlorophenol and nitrite as three important pollutants in water samples via a nanostructure modified sensor
- Keivani, Zeinab, Shabani-Nooshabadi, Mehdi, Karimi-Maleh, Hassan
- Journal of colloid and interface science 2017 v.507 pp. 11-17
- 4-chlorophenol, aniline, catechol, detection limit, electrochemistry, nanoparticles, nickel oxide, nitrites, pollutants, synergism, thiosulfates
- A voltammetric sensor was designed to analyze thiosulfate (TS), 4-chlorophenol (4-CP) and nitrite (NT), which are water pollutants, in mixed samples by combining the high conductive properties of NiO nanoparticle (NiO/NPs) and the excellent mediator properties of novel catechol derivative (2,4-dimethyl-N′-[1-(2,3-dihydroxyphenyl)methylidene]aniline). 2,4-Dimethyl-N′-[1-(2,3-dihydroxyphenyl)methylidene]aniline was synthesized for the first time and proposed as a high-quality modifier for electrocatalytic analysis of TS and its simultaneous analysis in the presence of 4-CP and NT. At a pH=6.0 as an optimum condition in electrochemical analysis, we seen the synergic effect for the simultaneous determination of TS, 4-CP and NT in the range of 0.05–400.0μM, 1.0–600.0μM, and 10.0–700.0μM, with a limit of detection of 0.01μM for TS, of 0.7μM for 4-CP, and of 5.0μM for NT respectively.