Molecularly Imprinted Polymers Based Electrochemical Sensor for 2,4-Dichlorophenol Determination
Abstract
:1. Introduction
2. Materials and Methods
2.1. Instrumentation and Reagents
2.2. Fabrication of the Modified Electrodes
2.3. Experimental Measurements
3. Results and Discussion
3.1. Morphology of Fe3O4 Nanoparticles and MIPs/Fe3O4
3.2. Electrochemical Behavior of 2,4-DCP at Modified Electrodes
3.3. Optimization of MIPs/Fe3O4/GCE Preparation Conditions
3.4. Determination of 2,4-DCP
3.5. Reproducibility and Stability
3.6. Selectivity Study
3.7. Real Water Sample Analysis
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Modified electrode | Linear range (μM) | LOD (μM) | References |
---|---|---|---|
Nafion/MWNTs/GCE | 0.1–100 | 0.037 | [5] |
Tyrosinase/MWNTs/GCE | 2.0–100 | 0.66 | [6] |
Lac/PVA/F108/Au NPs/GCE | 1.0–25.0 | 0.04 | [7] |
Mb-AG/GCE | 12.5–208 | 2.06 | [24] |
HRP/MWNTs/GCE | 1.0–100 | 0.38 | [25] |
MIPs/Fe3O4/GCE | 0.04–2.0 | 0.01 | this work |
Items | Current response of sensors (μA) | RSD (%) (n = 4) | |||
---|---|---|---|---|---|
Sensor 1 | Sensor 2 | Sensor 3 | Sensor 4 | ||
Reproducibility | 8.79 | 9.55 | 8.46 | 9.23 | 2.4 |
0 day | 3 day | 7 day | 14 day | ||
Stability | 9.11 | 8.98 | 8.72 | 8.47 |
River water | Added (µM) | Found (µM) | Recovery (%) | RSD (%) (n = 3) |
---|---|---|---|---|
0 | Not detected | – | – | |
Sample 1 | 0.16 | 0.153 | 95.6 | 3.9 |
1.2 | 1.17 | 97.5 | 4.2 | |
0 | Not detected | – | – | |
Sample 2 | 0.16 | 0.155 | 96.9 | 3.7 |
1.2 | 1.13 | 94.2 | 3.4 |
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Liu, B.; Cang, H.; Jin, J. Molecularly Imprinted Polymers Based Electrochemical Sensor for 2,4-Dichlorophenol Determination. Polymers 2016, 8, 309. https://doi.org/10.3390/polym8080309
Liu B, Cang H, Jin J. Molecularly Imprinted Polymers Based Electrochemical Sensor for 2,4-Dichlorophenol Determination. Polymers. 2016; 8(8):309. https://doi.org/10.3390/polym8080309
Chicago/Turabian StyleLiu, Benzhi, Hui Cang, and Jianxiang Jin. 2016. "Molecularly Imprinted Polymers Based Electrochemical Sensor for 2,4-Dichlorophenol Determination" Polymers 8, no. 8: 309. https://doi.org/10.3390/polym8080309