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| Study and Application of Acid Orange Ⅱ Sensor Based on Molecularly Imprinted Electropolymerized Membrane |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:molecular imprinting electropolymerization o-phenylenediamine m-dihydroxybenzene acid orange Ⅱ |
| Author | Institution |
| WEI Shou-lian*,SU Xu-xian,WANG Hong-wu,YAN Zi-jun |
肇庆学院化学化工学院 |
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| Abstract: |
| A voltammetric sensor for the determination of acid orange Ⅱ（AO2） was developed based on molecularly imprinted electropolymerized membrane.The sensor was obtained by electropolymerization of o-phenylenediamine（o-PD） and m-dihydroxybenzene（m-DB） on a platinum electrode in the presence of AO2 as a template.The recognition performance of the sensor was studied in the presence of potassium ferricyanide（K3［Fe（CN）6］） by cyclic voltammetry（CV） and differential pulse voltammetry（DPV）.The template was removed by washing with methanol-acetic acid（7∶3） solution.The studies revealed that the imprinted sensor showed an excellent selectivity,sensitivity and stability for AO2.The response of the imprinted sensor was linear with concentration of AO2 from 1.0 μg/L to 100.0 μg/L,and the detection limit（S/N=3） was 0.10 μg/L.The method was applied in the detection of AO2 in drinks and beer samples with satisfactory results. |
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