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Application of magnetic molecularly imprinted polymers in the detection of malachite green in fish samples
Application of magnetic molecularly imprinted polymers in the detection of malachite green in fish samples
- Source :
- Reactive and Functional Polymers. 98:24-30
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Magnetic molecularly imprinted polymers (MMIPs) synthesized through suspension polymerization were used as the adsorbent for the detection of malachite green (MG) in fish samples. The morphological, thermal and magnetic properties of the MMIPs were characterized. The influence of polymerization condition on the absorption capacity of the MMIPs for MG was explored. The results gave the optimum polymerization condition as follows: using MG (0.25 mmol) as template, methacrylic acid (1 mmol) as monomer, ethylene dimethacrylate (5 mmol) as cross linker, 2,2′-Azobis(2-methylpropionitrile) (100 mg) as initiator, Fe 3 O 4 (100 mg) as magnetic nuclei, and PVA (1%) as dispersant. Under the optimum condition the apparent maximum adsorption capacity of MMIPs is 5693 μg·g − 1 with dissociation constant being 23.5 mg·L − 1 . The MMIPs also have strong magnetic responses to an external magnet, which enable the rapid separation from the sample solution. The MMIPs were employed for the detection of MG residue in fish samples combined with HPLC. The recoveries of spiked MG in fish samples ranged from 82.7% to 111% with RSD in the range of 2.0%–12.8%. The MMIPs can retain 90% of the original adsorption capacity even if used for 5 times. Thus, the prepared MMIPs can be applied to the sample pretreatment for separation and enrichment of MG residue in fish samples.
- Subjects :
- Residue (complex analysis)
Chromatography
Polymers and Plastics
General Chemical Engineering
010401 analytical chemistry
Molecularly imprinted polymer
02 engineering and technology
General Chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Biochemistry
High-performance liquid chromatography
0104 chemical sciences
chemistry.chemical_compound
Adsorption
Methacrylic acid
chemistry
Polymerization
Materials Chemistry
Environmental Chemistry
Suspension polymerization
Malachite green
0210 nano-technology
Subjects
Details
- ISSN :
- 13815148
- Volume :
- 98
- Database :
- OpenAIRE
- Journal :
- Reactive and Functional Polymers
- Accession number :
- edsair.doi...........20b8177bfa3bfbf0bff00441ca1caf4f
- Full Text :
- https://doi.org/10.1016/j.reactfunctpolym.2015.11.002