Novel multi-template molecularly imprinted polymers (mt-MIPs) with six phenolic compounds as the template, namely phenol, 4-chlorophenol (4-CP), 2,4,6-trichlorophenol (2,4,6-TCP), 2,4-dichlorophenol (2,4-DCP), 2-chlorophenol (2-CP) and 2,6-dichlorophenol (2,6-DCP), were prepared by precipitation polymerization and used as the adsorbents of solid-phase extraction (SPE), and coupled with capillary electrophoresis (CE) for the simultaneous selective extraction, separation and determination of trace phenolic compounds in water samples. The resultant mt-MIPs exhibited uniform spherical morphology, large specific surface area and high thermal stability, and offered high selectivity towards the six template phenolic compounds. Various parameters affecting the molecularly imprinted SPE (MISPE) efficiency were investigated in detail, and excellent CE separation was realized within 7 min. Good linearity was obtained in the range of 1-200 mu g L-1 for phenol and 4-CP, and 1-300 mu g L-1 for 2,4,6-TCP, 2,4-DCP, 2-CP and 2,6-DCP. High sensitivity was attained with low limits of detection and quantification ranging from 0.17 to 0.31 mu g L-1 and 0.57 to 1.03 mu g L-1, respectively. Satisfactory recoveries for spiked reservoir water, river water, tannery wastewater and tap water samples were achieved in the range of 82.13-105.63% with relative standard deviations within 1.68-6.96%. The developed MISPE-CE method proved practically feasible for simultaneous selective extraction/enrichment, separation and sensitive determination of multiple targets in complicated aqueous matrices. (C) 2016 Elsevier B.V. All rights reserved.
WOS Subject Extended:
Biochemistry & Molecular Biology
Strategic Priority Research Program of the Chinese Academy of Sciences(XDA11020702)
; National Defense Science and Technology Innovation Project of Chinese Academy of Sciences(CXJJ-16M254)
; Ministry of Science and Technology Project Foundation(2014FY210600)
; National Natural Science Foundation of China(21477160
1.Sichuan Univ, Natl Engn Lab Clean Technol Leather Manufacture, Chengdu 610065, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 3.Yantai Univ, Sch Chem & Chem Engn, Yantai 264005, Peoples R China
Lu, Wenhui,Wang, Xiaoyan,Wu, Xiaqing,et al. Multi-template imprinted polymers for simultaneous selective solid-phase extraction of six phenolic compounds in water samples followed by determination using capillary electrophoresis[J]. JOURNAL OF CHROMATOGRAPHY A,2017,1483:30-39.