A novel high selective and sensitive para-nitrophenol voltammetric sensor, based on a molecularly imprinted polymer-carbon paste electrode.
By using a molecularly imprinted polymer (MIP) as a recognition element, the design and construction of a high selective voltammetric sensor for para-nitrophenol was formed. Para-nitrophenol selective MIP and a non-imprinted polymer (NIP) were synthesized, and then used for carbon paste (CP) electrode preparation. The MIP-CP electrode showed greater recognition ability in comparison to the NIP-CP. It was shown that electrode washing after para-nitrophenol extraction led to enhanced selectivity, without noticeably decreasing the sensitivity. Some parameters affecting sensor response were optimized and a calibration curve was plotted. A dynamic linear range of 8x10(-9) to 5x10(-6) mol L(-1) was obtained. The detection limit of the sensor was calculated as 3x10(-9) mol L(-1). Thus, this sensor was used successfully for the para-nitrophenol determination in different water samples.
Alizadeh
Taher
T
Department of Applied Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran. taa 55@yahoo.com
Ganjali
Mohammad Reza
MR
Norouzi
Parviz
P
Zare
Mashallah
M
Zeraatkar
Ali
A
D004566:Electrodes; D054802:Molecular Imprinting / Q000379:methods*; D009596:Nitrophenols
D009596:Nitrophenols; C024836:4-nitrophenol