Thermo-responsive polymer tethered metal-organic framework core-shell magnetic microspheres for magnetic solid-phase extraction of alkylphenols from environmental water samples.
In this work, the thermo-responsive polymer PNIPAM tethered to Fe3O4@SiO2@MOF core-shell magnetic microspheres was first synthesized by a surface-selective post-synthetic strategy and underwent highly efficient magnetic solid-phase extraction (MSPE) of alkylphenols from aqueous samples. Alkylphenols, including 4-tert-octylphenol (OP) and 4-n-nonylphenol (NP), were selected as target compounds. The sample quantification was carried out using LC-MS/MS in multiple reaction monitor (MRM) mode. Under optimal working conditions, the developed method showed good linearity in the range of 5-1000ngL(-1), a low limit of detection (1.5ngL(-1)), and good repeatability (relative standard deviation, <8%, n=5) for NP and OP. Owning to the hydrophilic/hydrophobic switchable properties of the nanocomposite, high recoveries (78.7-104.3%) of alkylphenols were obtained under different extraction conditions. The levels of OP and NP in environmental samples collected from local river, lake and pond waters were analyzed using the developed method. It was believed that the synthesized material with the thermo-responsive coating, large surface areas and magnetic properties should have great potential in the extraction and removal of alkylphenols from environmental samples.
Key Laboratory for Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, PR China.
Yuqian
Y
Jia
Key Laboratory for Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, PR China.
Hao
H
Su
Department of Chemistry, the Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China.
Y-L Elaine
YL
Wong
Key Laboratory for Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, PR China; Department of Chemistry, the Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China. Electronic address: xiangfchensdas@163.com.
Xiangfeng
X
Chen
Department of Chemistry, the Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China. Electronic address: twdchan@cuhk.edu.hk.
T-W
TW
Dominic Chan
D000180:Acrylic Resins / Q000737:chemistry*; D002853:Chromatography, Liquid; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D060106:Lakes / Q000737:chemistry; D008863:Microspheres; D053761:Nanocomposites; D009942:Organometallic Compounds / Q000737:chemistry*; D010636:Phenols / Q000302:isolation & purification*; D011108:Polymers; D061005:Ponds / Q000737:chemistry; D045483:Rivers / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*; D053719:Tandem Mass Spectrometry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
D000180:Acrylic Resins; D009942:Organometallic Compounds; D010636:Phenols; D011108:Polymers; D014874:Water Pollutants, Chemical; C052970:poly-N-isopropylacrylamide; D012822:Silicon Dioxide; C041594:4-nonylphenol; C105260:4-tert-octylphenol; D052203:Ferrosoferric Oxide
Alkylphenol; Environmental water samples; Magnetic solid-phase extraction; Metal-organic frameworks; Thermo-responsive polymer