Title of article :
Preparation of molecularly imprinted solid phase extraction using bensulfuron-methyl imprinted polymer and clean-up for the sulfonylurea-herbicides in soybean Original Research Article
Author/Authors :
Kaijie Tang، نويسنده , , Shangwei Chen، نويسنده , , Xiaohong Gu and Jian TANG، نويسنده , , Haijun Wang، نويسنده , , Jun Dai، نويسنده , , Jian Tang، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
A pre-treatment methodology based on the molecularly imprinted solid phase extraction (MI-SPE) procedure was developed for the determination of bensulfuron-methyl (BSM), tribenuron-methyl (TBM), metsulfuron-methyl (MSM) and nicosulfuron (NS) in soybean samples. A molecular imprinted polymer (MIP) was prepared by precipitation polymerization using BSM as the template molecule, α-methacrylic acid (MAA) as the functional monomer, trimethylolpropane trimethacrylate (TRIM) as the cross-linker and dichloromethane as the porogen. The binding behaviors of the template BSM and its analogues on the MIP were evaluated by high performance liquid chromatography (HPLC). Then, solid phase extraction (SPE) with a BSM molecularly imprinted polymer (BSM-MIP) as adsorbent was investigated and the optimum loading, washing, and eluting conditions for MI-SPE of the selected BSM, MSM, TBM, and NS were established. The optimized MI-SPE procedure was used to extract the sulfonylureas and a high recovery was obtained in the soybean samples.
Keywords :
Sulfonylurea-herbicides , Molecularly imprinted solid phase extraction , Soybean , Bensulfuron-methyl imprinted polymers
Journal title :
Analytica Chimica Acta
Journal title :
Analytica Chimica Acta