Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
Talanta. 2013 Sep 30;114:60-5. doi: 10.1016/j.talanta.2013.04.005. Epub 2013 Apr 12.
A novel solid-phase microextraction (SPME) fiber based on carbon nanotubes-titanium oxide (CNT-TiO2) composite coating bonded onto stainless steel wire was prepared via electroless plating and sol-gel techniques. The SPME coating was characterized by scanning electron microscopy and Raman microscopy. Coupled to gas chromatography (GC), the fiber was investigated with seven polycyclic aromatic hydrocarbons (PAHs) in direct-immersion mode. The SPME-GC analytical method was evaluated under optimized extraction conditions. Compared with other reports, higher sensitivity (LODs, 0.002-0.004 μg L(-1)) and better linear range (0.01-100 and 0.01-200 μg L(-1)) were obtained by the proposed method. The fiber exhibited high thermal stability to 300 °C and excellent durability in HCl and NaOH solutions. The as-established SPME-GC method was used to analyze the real water samples and satisfactory results were obtained.
一种基于碳纳米管-氧化钛（CNT-TiO2）复合涂层的新型固相微萃取（SPME）纤维，通过化学镀和溶胶-凝胶技术被制备在不锈钢丝上。通过扫描电子显微镜和拉曼显微镜对 SPME 涂层进行了表征。纤维与气相色谱（GC）耦合，在直接浸没法中对七种多环芳烃（PAHs）进行了研究。在优化的萃取条件下对 SPME-GC 分析方法进行了评估。与其他报道相比，该方法具有更高的灵敏度（LODs，0.002-0.004 μg L（-1））和更好的线性范围（0.01-100 和 0.01-200 μg L（-1））。该纤维在 300°C 时表现出较高的热稳定性，在 HCl 和 NaOH 溶液中具有优异的耐用性。所建立的 SPME-GC 方法用于分析实际水样，得到了令人满意的结果。
