Department of Chemistry, The University of Toledo, Toledo, OH 43606, USA.
J Sep Sci. 2011 Feb;34(3):340-6. doi: 10.1002/jssc.201000367. Epub 2011 Jan 3.
Four polymeric ionic liquids based on two different cations, poly(1-vinyl-3-hexylimidazolium) and poly(1-vinyl-3-hexadecylimidazolium), combined with two different anions, bis[(trifluoromethyl)sulfonyl]imide (NTf 2-) and chloride (Cl(-)), were combined in various weight percentages and used as sorbent coatings for solid-phase microextraction gas chromatography (SPME-GC). The selectivity of the fiber coatings for 12 test analytes was examined. The extraction efficiency of n-alcohols increased with an increase in the weight percentage of chloride ion in the sorbent coating. The ability to tune the interactions between the coating material and the analytes was exploited and resulted in distinct changes in the limits of detection for hydrogen-bonding analytes with varying chloride ion content in the sorbent coating.
四种基于两种不同阳离子（聚（1-乙烯基-3-己基咪唑）和聚（1-乙烯基-3-十六烷基咪唑））的聚合离子液体与两种不同阴离子（双[（三氟甲基）磺酰基]亚胺（NTf2-）和氯离子（Cl-））以不同的重量百分比结合，并用作固相微萃取气相色谱（SPME-GC）的吸附剂涂层。研究了纤维涂层对 12 种测试分析物的选择性。随着吸附剂涂层中氯离子重量百分比的增加，醇类的萃取效率增加。利用调节涂层材料与分析物之间相互作用的能力，导致吸附剂涂层中氯离子含量变化时氢键分析物的检测限发生明显变化。
