Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.
J Sep Sci. 2012 Jan;35(1):101-6. doi: 10.1002/jssc.201100694. Epub 2011 Dec 5.
A highly porous fiber-coated SBA-15/polyaniline material was prepared for solid-phase microextraction (SPME). The SBA-15/polyaniline nanocomposite was synthesized via chemical polymerization. The prepared SBA-15/polyaniline particles were analyzed by scanning electron microscopy analysis. The prepared nanomaterial was immobilized onto a stainless steel wire for fabrication of the SPME fiber. The fiber was evaluated for the extraction of some polycyclic aromatic hydrocarbons (PAHs) from aqueous sample solutions in combination with gas chromatography-mass spectrometry (GC-MS). In optimum conditions (extraction temperature 60°C, extraction time 40 min, ionic strength 20%, stirring rate: 500 rpm, desorption temperature 260°C, desorption time 2 min), the repeatability for one fiber (n=3), expressed as relative standard deviation (RSD%), was between 5.3 and 8.6% for the test compounds. For deionized water, spiked with selected PAHs, the detection limits for the studied compounds were between 2 and 20 pg/mL.
一种高度多孔的纤维涂层 SBA-15/聚苯胺材料被制备用于固相微萃取（SPME）。SBA-15/聚苯胺纳米复合材料通过化学聚合合成。通过扫描电子显微镜分析对制备的 SBA-15/聚苯胺颗粒进行了分析。将制备的纳米材料固定在不锈钢丝上，用于制备 SPME 纤维。该纤维与气相色谱-质谱联用（GC-MS）结合，用于从水样中萃取一些多环芳烃（PAHs）。在最佳条件下（萃取温度 60°C，萃取时间 40 分钟，离子强度 20%，搅拌速度：500rpm，解吸温度 260°C，解吸时间 2 分钟），对于测试化合物，一个纤维（n=3）的重复性表示为相对标准偏差（RSD%），在 5.3%至 8.6%之间。对于去离子水，用选定的 PAHs 进行了加标，研究化合物的检测限在 2 至 20pg/mL 之间。
