中山大学学报(自然科学版)
中山大學學報(自然科學版)
중산대학학보(자연과학판)
Acta Scientiarum Naturalium Universitatis Sunyatseni
2015年
5期
72-76
,共5页
徐莉%徐小艳%许志锋%黄健文
徐莉%徐小豔%許誌鋒%黃健文
서리%서소염%허지봉%황건문
2,4 -二氯苯氧乙酸%磁性分子印迹聚合物%表征%固相萃取
2,4 -二氯苯氧乙痠%磁性分子印跡聚閤物%錶徵%固相萃取
2,4 -이록분양을산%자성분자인적취합물%표정%고상췌취
2,4 -dichlorophenoxyacetic acid%magneitc molecularly imprinted polymers%characteriza-tion%solid phase extraction
以2,4-二氯苯氧乙酸(2,4-D)为模板分子,甲基丙烯酸(MAA)为功能单体,Fe3 O4为磁性载体,采用乳液聚合方法制备了相应的磁性分子印迹聚合物(Mag-MIPs)。采用透射电镜(TEM)、热重分析(TG)等对 Mag-MIPs 进行了一系列表征。吸附实验表明该磁性印迹聚合物对2,4-D 的吸附能力明显强于非印迹聚合物。采用 Mag-MIPs 为固相萃取材料,结合高效液相色谱分析,对质量浓度约为50μg·L -1模拟水样中的2,4-D 进行了分析检测,样品回收率范围为91.7%~110.4%,相对平均偏差为7.38%(n =3)。
以2,4-二氯苯氧乙痠(2,4-D)為模闆分子,甲基丙烯痠(MAA)為功能單體,Fe3 O4為磁性載體,採用乳液聚閤方法製備瞭相應的磁性分子印跡聚閤物(Mag-MIPs)。採用透射電鏡(TEM)、熱重分析(TG)等對 Mag-MIPs 進行瞭一繫列錶徵。吸附實驗錶明該磁性印跡聚閤物對2,4-D 的吸附能力明顯彊于非印跡聚閤物。採用 Mag-MIPs 為固相萃取材料,結閤高效液相色譜分析,對質量濃度約為50μg·L -1模擬水樣中的2,4-D 進行瞭分析檢測,樣品迴收率範圍為91.7%~110.4%,相對平均偏差為7.38%(n =3)。
이2,4-이록분양을산(2,4-D)위모판분자,갑기병희산(MAA)위공능단체,Fe3 O4위자성재체,채용유액취합방법제비료상응적자성분자인적취합물(Mag-MIPs)。채용투사전경(TEM)、열중분석(TG)등대 Mag-MIPs 진행료일계렬표정。흡부실험표명해자성인적취합물대2,4-D 적흡부능력명현강우비인적취합물。채용 Mag-MIPs 위고상췌취재료,결합고효액상색보분석,대질량농도약위50μg·L -1모의수양중적2,4-D 진행료분석검측,양품회수솔범위위91.7%~110.4%,상대평균편차위7.38%(n =3)。
In this work,the magnetic molecularly imprinted polymers (Mag-MIPs)based on Fe3 O4 mag-netite were prepared using 2,4 -dichlorophenoxyacetic acid (2,4 -D)as a template molecule.The morphological and magnetic characteristics of the Mag-MIPs were characterized by transmission electron microscopy (TEM),fourier transform infrared spectrometer (FT-IR),and vibrating sample magnetome-try (VSM).The specific adsorption property was studied using binding experiment.The result showed that Mag-MIPs had higher recognition for the template than the non-imprinted polymers (Mag-NIPs). Moreover,the specific recognition of Mag-MIPs was further investigated using solid phase extraction (SPE)coulped high performance liquid chromatography (HPLC)analysis of the simulation water sam-ples.The maximum recoveries of spiked sample were in range of 91.7% ~110.4% with RSD 7.38 (n =3).These results indicate that mag-MIPs has potential application in separation and analysis of biological and environmental sample.