三聚氰胺
化学
分子印迹聚合物
色谱法
洗脱
检出限
固相萃取
分子印迹
萃取(化学)
聚合物
分析物
磁性纳米粒子
甲醇
高效液相色谱法
基质(化学分析)
纳米颗粒
纳米技术
有机化学
选择性
催化作用
材料科学
作者
Miao Wang,Yongxin She,Xinjun Du,Yu‐Hwa Huang,Xiaomei Shi,Maojun Jin,Fen Jin,Hua Shao,Jing Wang
标识
DOI:10.1080/00032719.2012.709895
摘要
A novel method using magnetic molecular imprinting polymers (MMIP) specific for recognizing, separating, and extracting melamine in bovine milk was developed with an external additive magnetic shelf in this paper. The MMIP was synthesized with Fe3O4 nanoparticles and molecular imprinted polymer synthesis technology. With the help of an elution step using methanol/acetic acid mixture elution, the melamine could be collected and concentrated. By using high performance liquid chromatography combined with this pretreatment technique, the analytes eluted from the magnetic polymers can be determined. This extraction method was validated by analysis of incurred bovine milk matrix. The proposed method simplified the procedures of classical solid-phase extraction method and improved the reliability of method. The obtained recoveries of this method were in the range of 85.04–105.2% in spiked milk samples. The limit of detection (LOD) was below 29.2 ng g−1.
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