Preparation of porous aromatic framework/ionic liquid hybrid composite coated solid-phase microextraction fibers and their application in the determination of organochlorine pesticides combined with GC-ECD detection
Preparation of porous aromatic framework/ionic liquid hybrid composite coated solid-phase microextraction fibers and their application in the determination of organochlorine pesticides combined with GC-ECD detection
复制标题
DOI：
10.1039/c5an01372k
复制
发表时间：
2016-01-01
期刊：
影响因子：
4.2
通讯作者：
Jia, Qiong
中科院分区：
文献类型：
--
作者：
Wu, Mingxue;Chen, Gang;Jia, Qiong
以离子液体1-(三乙氧基硅基)丙基-3-氨基丙基咪唑六氟磷酸盐为固相微萃取涂层制备了一种新型杂化材料，并将其用于有机氯农药的萃取。该纤维结合了多孔芳香骨架和离子液体的优点，对有机氯农药表现出较高的吸附能力。在优化的实验条件下，L-1的增敏倍数在1-500Mg范围内呈良好的线性关系。方法的检出限和定量限分别为0.11-0.29mgL-1和0.35-0.93mgL-1。有机氯农药6次重复测定的相对标准偏差分别为4.4%~7.2%和5.7%~10.1%。与气相色谱-电子捕获检测器联用，成功地用于果汁和牛奶样品中有机氯农药的测定，回收率为76.1%~121.3%。
A novel hybrid material incorporating porous aromatic frameworks and an ionic liquid, 1-(triethoxy silyl)propyl-3-aminopropyl imidazole hexafluorophosphate, was prepared as solid-phase microextraction coating and employed for the extraction of organochlorine pesticides. Combining the advantages of porous aromatic frameworks and an ionic liquid, the fiber exhibited a high adsorption capacity for organochlorine pesticides. Under optimized experimental conditions, enhancement factors of 247-1696 were obtained with good linearity in the range of 1-500 mu g L-1. The detection limits and quantification limits were determined to be in the range of 0.11-0.29 mu g L-1 and 0.35-0.93 mu g L-1. The relative standard deviations for six replicates of organochlorine pesticides were in the range of 4.4%-7.2% and 5.7%-10.1% for one fiber and fiber-to-fiber, respectively. By coupling with a gas chromatography-electron capture detector, the novel fiber was successfully used for the determination of organochlorine pesticides in juice and milk samples with recoveries of 76.1%-121.3%.