一种基于分子印迹聚合物-碳糊电极的新型高选择性和高灵敏度对硝基苯酚伏安传感器。

A novel high selective and sensitive para-nitrophenol voltammetric sensor, based on a molecularly imprinted polymer-carbon paste electrode.

作者信息

Alizadeh Taher, Ganjali Mohammad Reza, Norouzi Parviz, Zare Mashallah, Zeraatkar Ali

机构信息

Department of Applied Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran. taa

出版信息

Talanta. 2009 Oct 15;79(5):1197-203. doi: 10.1016/j.talanta.2009.02.051. Epub 2009 Mar 9.

DOI:10.1016/j.talanta.2009.02.051

PMID:19635346

Abstract

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.

摘要

通过使用分子印迹聚合物（MIP）作为识别元件，构建了一种用于对硝基苯酚的高选择性伏安传感器。合成了对硝基苯酚选择性MIP和非印迹聚合物（NIP），然后用于制备碳糊（CP）电极。与NIP-CP相比，MIP-CP电极表现出更强的识别能力。结果表明，对硝基苯酚萃取后对电极进行清洗可提高选择性，且灵敏度无明显降低。优化了影响传感器响应的一些参数并绘制了校准曲线。获得了8×10⁻⁹至5×10⁻⁶ mol L⁻¹的动态线性范围。该传感器的检测限计算为3×10⁻⁹ mol L⁻¹。因此，该传感器成功用于不同水样中对硝基苯酚的测定。