共 27 条
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.
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页码:2707 / 2713
页数:7
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