Group-selective molecularly imprinted polymer solid-phase extraction for the simultaneous determination of six sulfonamides in aquaculture products
文献类型： 外文期刊
作者： Shi, Xizhi 1 ; Meng, Yuan 1 ; Liu, Jinghua 1 ; Sun, Aili 1 ; Li, Dexiang 1 ; Yao, Chunxia 2 ; Lu, Yin 1 ; Chen, Jiong 1 ;
作者机构： 1.Ningbo Univ, Key Lab Appl Technol Marine Biol, Minist Educ, Fac Life Sci & Biotechnol, Ningbo 315211, Zhejiang, Peoples R China
2.Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201106, Peoples R China
关键词： Aquaculture products;Group selectivity;Molecularly imprinted polymers;Sulfonamides (SAs)
期刊名称：JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES （ 影响因子：3.205； 五年影响因子：3.068 ）
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收录情况： SCI
摘要： Group-selective molecularly imprinted polymers (MIPs) made from sulfonamides (SAs) using functional monomer methacrylic acid (MAA) were synthesized. The derived molecularly imprinted solid-phase extraction (MISPE) cartridges were developed for the purification and enrichment of aquatic products. The optimum template molecule and the ratio of the functional monomer to the template for obtaining group selectivity to SAs were sulfadimethoxine (SDM) and 4:1, respectively. The MIPs were characterized by Brunauer-Emmett-Teller (BET), scatchard plot, and chromatography analysis, all of which demonstrate better chromatographic behavior and group-selectivity of MIPs for SAs compared with those of corresponding NIPs. The extraction conditions of MISPE for six SAs were optimized; the method precision and accuracy were satisfactory for the fish and shrimp samples at 0.05, 0.1, and 0.2mgkg~(-1) spiked levels. Recoveries ranging from 85.5% to 106.1% (RSD, 1.2-7.0%, n=3) were achieved. The limits of detection (S/N=3) and quantitation (S/N=10) in the shrimp and fish samples were achieved from 8.4 to 10.9μgkg~(-1) and from 22.4 to 27.7μgkg~(-1), respectively. Therefore, the obtained MIPs and MISPE can be employed for the enrichment and clean-up of SAs. This paper presents a new analytical method which enables the simultaneous determination and quantification of SAs in aquaculture products.
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