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

Abstract

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.

Carbonized silk fibers for in‐tube solid‐phase microextraction to detect polycyclic aromatic hydrocarbons in water samples

“…The proposed method has more convenience owing to achieving online analysis. LODs of the proposed method are not as good as IT‐SPME‐HPLC‐FLD (fluorescence detector) , but comparable with other methods , indicating that the sensitivity of this method is good. The linear ranges are superior to HFµE‐LD‐GC‐MS and the enrichment factors are superior to IT‐SPME‐HPLC‐DAD .…”

Triazine‐based organic polymers@SiO2 nanospheres for sensitive solid‐phase microextraction of polycyclic aromatic hydrocarbons

“…As listed in Table 3, LODs of this method are better than Fiber-SPME-HPLC-ultraviolet detector (UVD) with Ti@TiO 2 nanowires@Phenyl [33] and multiwall carbon nanotube/zirconium oxide nanocomposite (MWCNT/ZrO 2 ) [34]. The linear ranges of this method is wider than that of in-tube SPME-HPLC-fluorescence detector (FLD) based on polymer porous [36] and zeolitic imidazolate framework [37], but narrower than those methods [15,[33][34][35]. Moreover, the method is also more sensitive than magnetic solid-phase extraction (MSPE) [35] and dispersive microSPE [15], but it is not as good as these methods [36,37].…”

“…It indicates that the method has better precision than these methods employed with high sensitive detectors of UVD, and that maybe because TOPs@SiO 2 has good extraction ability. Moreover, the method is also more sensitive than magnetic solid-phase extraction (MSPE) [35] and dispersive microSPE [15], but it is not as good as these methods [36,37]. The linear ranges of this method is wider than that of in-tube SPME-HPLC-fluorescence detector (FLD) based on polymer porous [36] and zeolitic imidazolate framework [37], but narrower than those methods [15,[33][34][35].…”

“…Moreover, the method is also more sensitive than magnetic solid-phase extraction (MSPE) [35] and dispersive microSPE [15], but it is not as good as these methods [36,37]. The linear ranges of this method is wider than that of in-tube SPME-HPLC-fluorescence detector (FLD) based on polymer porous [36] and zeolitic imidazolate framework [37], but narrower than those methods [15,[33][34][35]. In terms of extraction time, the method can be compared with most of the reported methods.…”

“…Solid-phase microextraction (SPME) has attracted numerous attention [2,3] because it has many unique advantages over other methods, like stir bar sportive extraction [4], liquid-liquid extraction [5] and solid phase extraction (SPE) [6][7][8], for instance, being solvent-free, economical, and ease of operation. Various extraction configurations emerge in endlessly such as fiber [9], in-tube [10], stir bar [11], in tip [12], and dispersive SPE and SPME [13][14][15]. Among them, the combination of intube SPME and HPLC makes a possibility of high-throughput Article Related Abbreviations: DAD, diode array detector; EFs, enrichment factors; FLD, fluorescence detector; MSPE, magnetic solid-phase extraction; PEEK, polyetheretherketone; r, correlation coefficients; UVD, ultraviolet detector.…”