Preparation of Magnetic Molecularly Imprinted Polymer for Chlorpyrifos Adsorption and Enrichment

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Chen, M.^1 ; Ma, X.^2 ; Sheng, J.^2

School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, China^1

School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, China^2

关键词: Adsorption capacities;    Adsorption equilibria;    Adsorption performance;    Gas chromatography-mass spectrometry;    Langmuir isotherm models;    Molecularly Imprinted Polymer;    Pseudo-second-order kinetic models;    Solid-phase extraction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012061/pdf
DOI  :  10.1088/1757-899X/269/1/012061

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Magnetic molecularly imprinted polymer (MMIP) for chlorpyrifos was prepared and characterized. The adsorption performance of MMIP for chlorpyrifos was evaluated under various conditions. The results showed that the adsorption equilibrium was achieved within 1 h, the adsorption capacity was 16.8 mg/g, and the adsorption process could be well described by Langmuir isotherm model and pseudo-second-order kinetic model. The MMIP was used as the selective sorbent for solid-phase extraction of chlorpyrifos from environmental water and vegetable samples. Combined with gas chromatography-mass spectrometry, a LOD of 30 ng/L, spiked recovery of 89.6%-107.3% and RSD of 1.9%-3.8% for chlorpyrifos were obtained.