A newly developed molecularly imprinted polymer on the surface of TiO2 for selective extraction of triazine herbicides residues in maize, water, and soil
| Autor: | Hao Ran Geng, Hong Yang, Shan Shan Miao, She Feng Jin |
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| Rok vydání: | 2015 |
| Předmět: |
Models
Molecular Polymers Zea mays Biochemistry High-performance liquid chromatography Analytical Chemistry Molecular Imprinting Soil chemistry.chemical_compound Adsorption Limit of Detection Solid phase extraction Triazine Titanium Chromatography Herbicides Triazines Chemistry Solid Phase Extraction Extraction (chemistry) Molecularly imprinted polymer Water Methacrylic acid Environmental Pollutants Molecular imprinting Food Analysis |
| Zdroj: | Analytical and Bioanalytical Chemistry. 407:8803-8812 |
| ISSN: | 1618-2650 1618-2642 |
| DOI: | 10.1007/s00216-015-9039-x |
| Popis: | A new surface molecularly imprinted polymer (MIP) based on nano-TiO2 was developed using propazine (Pro) as a template molecule, ethyleneglycol dimethacrylate (EGDMA) as a crosslinker, methacrylic acid (MAA) as a functional monomer, and 2,2'-azobis (isobutyronitrile) (AIBN) as an initiator. Structures of the newly synthesized surface MIPs were characterized by Fourier transmission infrared spectrometry (FT-IR), scanning electron microscope (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD). The MIP had a good adsorption capacity and high recognition selectivity to propazine. Meanwhile, it exhibited a cross-selectivity for simazine (Sim) and atrazine (Atr). The MIPs were used as a solid phase extraction (SPE) material. Concomitant extraction, purification, and determination of three pesticides (Pro, Sim, and Atr) residues in water, soil, and maize plant and grain samples were performed by MIP-SPE coupled with high performance liquid chromatography (HPLC). The highly selective separation and enrichment of Pro, Atr, and Sim from the complex environmental media can be achieved. Thus, the newly developed technique provides an analytical platform to quantify the trace amount of Pro, Sim, and Atr residues in multi environmental media and food source. |
| Databáze: | OpenAIRE |
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