Preparation of barium sulfate-coated magnetite particles for the extraction of trimethoprim from environmental water samples based on mixed hemimicelles solid-phase extraction

被引:0
作者
Zhang, Fengshuang [1 ]
Hou, Juan [1 ]
Yan, Jin [1 ]
Zhao, Jiahui [1 ]
Zhao, Qi [1 ]
Wang, Long [1 ]
Li, Yi [2 ]
Ding, Lan [1 ]
机构
[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China
关键词
LIQUID-CHROMATOGRAPHY; WASTE-WATER; HPLC-UV; CHLOROPHENOLS; NANOPARTICLES; SEWAGE; FE3O4; RIVER; SULFADIAZINE; SURFACTANTS;
D O I
10.1039/c4ay02688h
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
In this study, barium sulfate-coated magnetite particles (Fe3O4/BaSO4) for mixed hemimicelles solid-phase extraction, have been successfully synthesized by a chemical coprecipitation method. Fe3O4/BaSO4 modified by sodium dodecyl sulfate (SDS) was applied for the extraction of trimethoprim from environmental water samples. Compared with other substrates, such as alumina, silica and titanium dioxide, Fe3O4/BaSO4 particles have better stability and resistance to acidity and alkalinity. A comprehensive study on the adsorption conditions, such as the amount of SDS, pH value, standing time, desorption solvent and the maximum extraction sample volume was presented. Good recovery (72.3-85.0%) and high concentration factor (800) were achieved using only 0.1 g of Fe3O4/BaSO4 and 20 mg of SDS. The detection and quantification limits of the proposed method were 0.05 and 0.16 mg L-1, respectively. It shows great analytical potential in the preconcentration of organic compounds from large volume water samples.
引用
收藏
页码:2707 / 2713
页数:7
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