Bunkoed Opas, Rueankaew Thanaschaphorn, Nurerk Piyaluk, Kanatharana Proespichaya
Trace Analysis and Biosensor Research Center, Prince of Songkla University, Hat Yai, Songkhla, Thailand.
Center of Excellence for Innovation in Chemistry, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand.
J Sep Sci. 2016 Jun;39(12):2332-9. doi: 10.1002/jssc.201600285. Epub 2016 May 31.
Polyaniline coated cigarette filters were successfully synthesized and used as a solid-phase extraction sorbent for the extraction and preconcentration of polycyclic aromatic hydrocarbons in water samples. The polyaniline helped to enhance the adsorption ability of polycyclic aromatic hydrocarbons on the sorbent through π-π interactions. The high porosity and large surface area of the cigarette filters helped to reduce backpressure and can be operated with high sample flow rate without loss of extraction efficiency. The developed sorbent was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The parameters that affected the extraction efficiencies, i.e. polymerization time, type of desorption solvent and its volume, sample flow rate, sample volume, sample pH, ionic strength, and organic modifier were investigated. Under the optimal conditions, the method was linear over the range of 0.5-10 μg/L and a detection limit of 0.5 ng/L. This simple, rapid, and cost-effective method was successfully applied to the preconcentration of polycyclic aromatic hydrocarbons from water samples. The developed method provided a high enrichment factor with good extraction efficiency (85-98%) and a relative standard deviation <10%.
成功合成了聚苯胺包覆的香烟过滤嘴，并将其用作固相萃取吸附剂，用于萃取和预富集水样中的多环芳烃。聚苯胺通过π-π相互作用有助于提高多环芳烃在吸附剂上的吸附能力。香烟过滤嘴的高孔隙率和大表面积有助于降低背压，并且可以在高样品流速下操作而不损失萃取效率。所制备的吸附剂通过傅里叶变换红外光谱和扫描电子显微镜进行了表征。研究了影响萃取效率的参数，即聚合时间、解吸溶剂的类型及其体积、样品流速、样品体积、样品pH值、离子强度和有机改性剂。在最佳条件下，该方法在0.5-10 μg/L范围内呈线性，检测限为0.5 ng/L。这种简单、快速且经济高效的方法成功应用于水样中多环芳烃的预富集。所开发的方法提供了高富集因子，具有良好的萃取效率（85-98%），相对标准偏差<10%。
