A stable mesoporous metal-organic framework as highly efficient sorbent of dispersive micro solid-phase extraction for the determination of polycyclic aromatic hydrocarbons by HPLC.
A stable mesoporous metal-organic framework as highly efficient sorbent of dispersive micro solid-phase extraction for the determination of polycyclic aromatic hydrocarbons by HPLC.
复制标题
DOI：
10.1002/jssc.201800775
复制
发表时间：
2018-11
影响因子：
3.1
通讯作者：
Lian Xia;Lijie Liu;Y. Dou;Lan Guo;Guoliang Li;Zhiwei Sun;J. You
中科院分区：
文献类型：
--
作者：
Lian Xia;Lijie Liu;Y. Dou;Lan Guo;Guoliang Li;Zhiwei Sun;J. You
由于多环芳烃的大分子尺寸，使用微孔吸附剂对其进行吸附导致吸附容量低。为了提高多环芳烃的萃取能力和检测灵敏度，基于稳定的介孔金属有机骨架材料吉林大学中国48，建立了一种高效的分散微固相萃取方法。吉林大学中国48是一种具有24.5 × 27.9纳米管的一维六方纳米管超杂化材料，有望成为分散微固相萃取吸附多环芳烃的高效吸附剂。建立了一种与高效液相色谱法联用测定7种多环芳烃的方法。合成的吉林大学中国48具有良好的稳定性，良好的形态，大的比表面积和开放的吸附位的特点。在优化的提取条件下，获得了比以往报道的其他方法更好的提取结果。该方法灵敏度高，检出限为0.021-0.13 ng/mL，线性范围为0.068 ~ 50 ng/mL，相关系数>0.9988，相对标准偏差<4.3%，回收率为85.8 ~ 109.55%。
Owing to the large molecular sizes of polycyclic aromatic hydrocarbons, their adsorption using microporous sorbents leads to a low adsorption capacity. Here, to increase the extraction capacity and detection sensitivity of polycyclic aromatic hydrocarbons, a highly efficient dispersive micro solid-phase extraction method was developed based on a stable mesoporous metal-organic framework named Jilin University China 48. Jilin University China 48 is a super hybrid with large one-dimensional hexagonal nanotube-like channels of 24.5 × 27.9 Å, which exhibits high potential to be an efficient sorbent of dispersive micro solid-phase extraction to adsorb polycyclic aromatic hydrocarbons. By combining with high-performance liquid chromatography, a sensitive method was developed for the determination of seven polycyclic aromatic hydrocarbons. The synthesized Jilin University China 48 exhibited excellent characteristics of stability, good morphology, large surface area, and open adsorption sites. Under the optimized extraction conditions, better extraction results were obtained than that of other methods reported previously. The proposed method exhibited high sensitivity with the limit of detections in the range of 0.021-0.13 ng/mL, good linearity in the range of 0.068-50 ng/mL with related coefficients of >0.9988, satisfactory precision with relative standard deviation of <4.3%, and adequate recoveries between 85.8 to 109.55% for all the target compounds.