Citation: HAN Fang, HU Yan-Yun, ZHANG Lei, SHENG Xuan, SUN Hao, SONG Wei, LV Ya-Ning, ZHENG Ping. Determination of Triazines Residues in Food Samples Using Dummy Molecularly Imprinted Solid Phase Extraction Based on Molecular Simulation[J]. Chinese Journal of Analytical Chemistry, ;2012, 40(11): 1648-1653. doi: 10.3724/SP.J.1096.2012.20196 shu

Determination of Triazines Residues in Food Samples Using Dummy Molecularly Imprinted Solid Phase Extraction Based on Molecular Simulation

HAN Fang ^1,2 ,
HU Yan-Yun ^1,2 ,
ZHANG Lei ^1,2 ,
SHENG Xuan ¹ ,
SUN Hao ¹ ,
SONG Wei ² ,
LV Ya-Ning ² ,
ZHENG Ping ^1,2,,

1.
¹ Anhui Entry-Exit Inspection and Quarantine Bureau, Hefei 230029, China;

Corresponding author: ZHENG Ping,
Received Date: 28 February 2012
Available Online: 24 May 2012

The molecularly imprinted polymers (MIPs) capable of extracting triazines from food samples were prepared by suspension polymerization using butylmelamine (BME) as template, methacrylic acid (MAA) as monomer and ethylene glycol dimethacrylate (EDMA) as cross-linker, respectively. Molecular modeling approach was used to screen the most suitable dummy template. The selective adsorption of MIPs was evaluated by high performance liquid chromatography. The synthesized MIPs were used as the solid phase extraction (SPE) materials. The optimum loading, washing and eluting conditions for molecularly imprinted solid phase extraction (MISPE) were established to obtain high selectivity and sensitivity. Compared with commercial SPE columns, MISPE exhibited selective binding properties for triazines, and the matrix effect was significantly decreased. The recoveries of all 10 triazines in matrix spiked samples were ranged from 87.8% to 105.2%, with the relative standard deviations (RSD) below 13% (n=6).
- Molecularly imprinted solid phase extraction,
- Dummy template,
- Molecular simulation,
- Triazines
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