title: A new strategy for determination of hydroxylamine and phenol in water and waste water samples using modified nanosensor.
abstract: A carbon paste electrode modified with p-chloranil and carbon nanotubes was used for the sensitive and selective voltammetric determination of hydroxylamine (HX) and phenol (PL). The oxidation of HX at the modified electrode was investigated by cyclic voltammetry (CV), chronoamperommetry, and electrochemical impedance spectroscopy. The values of the catalytic rate constant (k), and diffusion coefficient (D) for HX were calculated. Square wave voltammetric peaks current of HX and PL increased linearly with their concentrations at the ranges of 0.1-172.0 and 5.0-512.0 μmol L(-1), respectively. The detection limits for HX and PL were 0.08 and 2.0 μmol L(-1), respectively. The separation of the anodic peak potentials of HX and PL reached to 0.65 V, using square wave voltammetry. The proposed sensor was successfully applied for the determination of HX and PL in water and wastewater samples.
authors.affiliation: Department of Physics, Science and Research Branch, Islamic Azad University, Mazandaran, Iran.
authors.forename: Roya
authors.initials: R
authors.lastname: Sadeghi
authors.forename: Hassan
authors.initials: H
authors.lastname: Karimi-Maleh
authors.forename: Mohammad A
authors.initials: MA
authors.lastname: Khalilzadeh
authors.forename: Hadi
authors.initials: H
authors.lastname: Beitollahi
authors.forename: Zahra
authors.initials: Z
authors.lastname: Ranjbarha
authors.forename: Mohammad Bagher Pasha
authors.initials: MB
authors.lastname: Zanousi
mesh_terms: D058266:Dielectric Spectroscopy; D004784:Environmental Monitoring; D006108:Graphite / Q000737:chemistry; D019811:Hydroxylamine / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology; D019800:Phenol / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry
chemical_list: D014874:Water Pollutants, Chemical; D014867:Water; D019811:Hydroxylamine; D019800:Phenol; D006108:Graphite