Molecularly imprinted polymers to detect profenofos and carbofuran selectively with QCM sensors
| Autor: | Peter A. Lieberzeit, Wongduan Sroysee, Maliwan Amatatongchai, Suticha Chunta |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:Medical physics. Medical radiology. Nuclear medicine
Ethylene glycol dimethacrylate lcsh:R895-920 Biophysics Diphenylmethane 02 engineering and technology Molecularly imprinted polymer (MIP) 01 natural sciences chemistry.chemical_compound Carbofuran (CBF) Radiology Nuclear Medicine and imaging Instrumentation Polyurethane chemistry.chemical_classification 010401 analytical chemistry Azobisisobutyronitrile Molecularly imprinted polymer Quartz crystal microbalance Polymer 021001 nanoscience & nanotechnology Quartz crystal microbalance (QCM) 0104 chemical sciences chemistry Methacrylic acid 0210 nano-technology Profenofos (PFF) Nuclear chemistry |
| Zdroj: | Physics in Medicine, Vol 7, Iss, Pp-(2019) |
| DOI: | 10.1016/j.phmed.2019.100016 |
| Popis: | Two different molecularly imprinted polymers (MIP) were designed to selectively bind the insecticides carbofuran (CBF) and profenofos (PFF). CBF-MIP are based on methacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a crosslinker, and azobisisobutyronitrile (AIBN) as an initiator. The PFF-MIP comprised of polyurethane based on poly (4-vinylphenol) (PVP), and diphenyl methane-4,4′-di-isocyanate (DPDI) as functional monomers, phloroglucinol (PG) as the cross-linker, and diphenylmethane (DPM) as the porogen. For sensor measurement, MIPs were spin-coated onto one electrode pair of a dual-electrode QCM, while the second pair was spin-coated with NIPs. Fourier transform infrared (FT-IR) spectroscopy confirms successful template removal from the polymer matrix. The resulting CBF- and PFF-MIP coated onto quartz crystal microbalances (QCMs) lead to pesticide QCM sensors revealing the following analytical characteristics, respectively: dynamic detection range of 0.5–1000 μM for CBF-MIP and 10–1000 μM for PFF-MIP. In both cases, the MIP exhibit roughly ten times higher sensor signals, than the corresponding non-imprinted polymers (NIP). Keywords: Molecularly imprinted polymer (MIP), Quartz crystal microbalance (QCM), Carbofuran (CBF), Profenofos (PFF) |
| Databáze: | OpenAIRE |
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