Ueta Ikuo, Onikata Moe, Fujimura Koji, Yoshimura Tomotaka, Narukami Shoji, Mochizuki Suguru, Sasaki Tomohiro, Maeda Tsuneaki
Department of Applied Chemistry, University of Yamanashi, Takeda, Kofu, Japan.
Shinwa Chemical Industries Ltd, Kagekatsu-choFushimi-ku, Kyoto, Japan.
J Sep Sci. 2016 Nov;39(21):4202-4208. doi: 10.1002/jssc.201600752. Epub 2016 Oct 10.
A novel partitioning collection device comprising a glass cartridge packed with poly(dimethylsiloxane)-coated macroporous silica particles was developed for the precise quantification of polycyclic aromatic hydrocarbons in air. The analyte collection and elution performances achieved using different amounts of poly(dimethylsiloxane) coating were quantitatively evaluated. The sample retention power increased with increasing the coating, and more than 250 L of air could be collected without analyte breakthrough at a sampling temperature of 35°C. During the air collection, the moisture in the air was not retained on the particles due to the hydrophobic surface of the sorbent. A complete and rapid elution of the collected analytes from the device was accomplished by the passage of only 10 mL of acetone with ultrasonication for 1 min. The proposed method was successfully applied for the determination of airborne polycyclic aromatic hydrocarbons in tunnel air.
开发了一种新型的分区收集装置，该装置包括一个装有聚（二甲基硅氧烷）涂层大孔二氧化硅颗粒的玻璃柱，用于精确量化空气中的多环芳烃。对使用不同量聚（二甲基硅氧烷）涂层实现的分析物收集和洗脱性能进行了定量评估。样品保留能力随着涂层量的增加而提高，在35°C的采样温度下，无需分析物穿透即可收集超过250 L的空气。在空气收集过程中，由于吸附剂的疏水表面，空气中的水分不会保留在颗粒上。仅通过10 mL丙酮超声处理1分钟，就可以从装置中完全快速地洗脱收集到的分析物。所提出的方法成功应用于隧道空气中空气中多环芳烃的测定。
