期刊
JOURNAL OF SEPARATION SCIENCE
卷 42, 期 12, 页码 2100-2106出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201900232
关键词
cyromazine; graphene oxide; molecularly imprinted polymers; seawater; selective recognition
资金
- National Natural Science Foundation of China [41876078]
- National Key Research and Development Program [2016YFC1402101]
- Shandong Provincial Natural Science Foundation of China [ZR2018MD016]
- Fundamental Research Funds for The Central Universities [201713059]
- Public Science and Technology Research Funds Projects of Ocean [201505034]
A novel molecularly imprinted polymer based on graphene oxide was prepared as a solid-phase extraction adsorbent for the selective adsorption and extraction of cyromazine from seawater samples. The obtained graphene oxide molecularly imprinted polymer and non-imprinted polymer were nanoparticles and characterized by scanning electron microscopy. The imprinted polymer showed higher adsorption capacity and better selectivity than non-imprinted polymer, and the maximum adsorption capacity was 14.5 mg/g. The optimal washing and elution solvents for molecularly imprinted solid phase extraction procedure were 2 mL of acetonitrile/water (80:20, v/v) and methanol/acetic acid (70:30, v/v), respectively. The recoveries of cyromazine in the spiked seawater sampleswere in the range of 90.3-104.1%, and the relative standard deviation was <5% (n = 3) under the optimal procedure and detection conditions. The limit of detection of the proposed method was 0.7 mu g/L, and the limit of quantitation was 2.3 mu g/L. Moreover, the imprinted polymer could keep high adsorption capacity for cyromazine after being reused six times at least. Finally, the synthesized graphene oxide molecularly imprinted polymer was successfully used as a satisfied sorbent for high selectivity separation and detection of cyromazine from seawater coupled with high-performance liquid chromatography.
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