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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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双分子印迹聚合物微球选择固相萃取环境和食品样品中壬基酚和双酚A
DOI: 10.11895/j.issn.0253-3820.140572, PP. 105-109
Keywords: 双模板分子印迹,壬基酚,双酚A,固相萃取,高效液相色谱
Abstract:
以壬基酚(NP)、双酚A(BPA)为模板分子,a-甲基丙烯酸(MAA)为功能单体,通过乳液聚合法制备了双模板分子印迹聚合物(D-MIP),并以D-MIP为固相萃取填料,建立了双分子印迹固相萃取-高效液相色谱荧光检测环境食品中痕量NP和BPA的方法.采用红外光谱和吸附实验对其性能进行了研究.结果表明,D-MIP对NP和BPA的饱和吸附量分别为73.3和97.5mg/g,相对选择性系数分别为2.2和1.7.在最佳条件下,本方法的线性范围为0.01-2.3mg/L(R2>0.998),检出限(S/N=3)为0.001-0.002mg/L.将本方法应用于江水、啤酒、鲫鱼中NP和BPA含量测定,回收率在86.4%~99.1%范围内,相对标准偏差小于6.2%.本方法选择性好、灵敏度高,对环境和食品中NP和BPA的富集、分离显示出良好的应用前景.
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