A new strategy for determination of hydroxylamine and phenol in water and waste water samples using modified nanosensor

作者：Sadeghi Roya; Karimi Maleh Hassan^*; Khalilzadeh Mohammad A; Beitollahi Hadi; Ranjbarha Zahra; Zanousi Mohammad Bagher Pasha

来源：Environmental Science and Pollution Research, 2013, 20(9): 6584-6593.

DOI：10.1007/s11356-013-1733-7

• Hydroxylamine
• Phenol
• p-Chloranil
• Multiwall carbon nanotubes paste electrode
• Voltammetry

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 mu mol L-1, respectively. The detection limits for HX and PL were 0.08 and 2.0 mu mol 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.

• 出版日期2013-9