TY - JOUR
T1 - Synthesis and characterization of magnetic-molecularly imprinted polymers for the HPLC-UV analysis of ametryn
AU - Khan, Sabir
AU - Hussain, Sajjad
AU - Wong, Ademar
AU - Foguel, Marcos Vinicius
AU - Moreira Gonçalves, Luís
AU - Pividori Gurgo, Maria Isabel
AU - Taboada Sotomayor, Maria del Pilar
PY - 2018/1/1
Y1 - 2018/1/1
N2 - © 2017 Elsevier B.V. Magnetic molecularly imprinted polymer (mag-MIP) were developed for the analysis of ametryn (4-N-ethyl-6-methylsulfanyl-2-N-propan-2-yl-1,3,5-triazine-2,4-diamine), a popular triazine herbicide. Iron oxide (Fe3O4) nanoparticles were synthetized, and then modified with tetraethoxysilane (TEOS) and 3-mercaptopropyltrimethoxysilane (MPS). Then MIPs’ polymerimerization occurred in the nanoparticles’ surface, using ethylene-glycol-dimethacrylate (EGDMA) as the building monomer, 2,2′-azobis(2-methylpropionitrile) (AIBN) as the radical initiator, and 2-vinylpyridine as the functional monomer. The functional monomer was previously chosen by computational simulation. The mag-MIPs’ adsorption behavior well-fitted a Langmuir model (qm of 8.6 mg g− 1, KL of 5.2 L mg− 1) and pseudo first order kinetics (k1 of 2.5 × 10− 4 s− 1). The developed analytical methodology, using high-performance liquid chromatography with UV detection (HPLC-UV), showed suitable selectivity and had a limit of detection (LOD) and quantification (LOQ) of 25 and 82 nmol L− 1, respectively.
AB - © 2017 Elsevier B.V. Magnetic molecularly imprinted polymer (mag-MIP) were developed for the analysis of ametryn (4-N-ethyl-6-methylsulfanyl-2-N-propan-2-yl-1,3,5-triazine-2,4-diamine), a popular triazine herbicide. Iron oxide (Fe3O4) nanoparticles were synthetized, and then modified with tetraethoxysilane (TEOS) and 3-mercaptopropyltrimethoxysilane (MPS). Then MIPs’ polymerimerization occurred in the nanoparticles’ surface, using ethylene-glycol-dimethacrylate (EGDMA) as the building monomer, 2,2′-azobis(2-methylpropionitrile) (AIBN) as the radical initiator, and 2-vinylpyridine as the functional monomer. The functional monomer was previously chosen by computational simulation. The mag-MIPs’ adsorption behavior well-fitted a Langmuir model (qm of 8.6 mg g− 1, KL of 5.2 L mg− 1) and pseudo first order kinetics (k1 of 2.5 × 10− 4 s− 1). The developed analytical methodology, using high-performance liquid chromatography with UV detection (HPLC-UV), showed suitable selectivity and had a limit of detection (LOD) and quantification (LOQ) of 25 and 82 nmol L− 1, respectively.
KW - Analytical chemistry
KW - Environmental analysis
KW - Food analysis
KW - Food quality
KW - Pesticide
UR - https://www.scopus.com/pages/publications/85034787687
U2 - 10.1016/j.reactfunctpolym.2017.11.002
DO - 10.1016/j.reactfunctpolym.2017.11.002
M3 - Article
SN - 1381-5148
VL - 122
SP - 175
EP - 182
JO - Reactive and Functional Polymers
JF - Reactive and Functional Polymers
ER -