Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China.
Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China.
Talanta. 2018 Aug 15;186:561-567. doi: 10.1016/j.talanta.2018.02.062. Epub 2018 Feb 19.
Metal-organic nanotubes (MONTs) have great potential for solid phase microextraction (SPME) on account of high specific surface area, tunable pore sizes, and exceptional thermal and chemical stability. In this work, zinc (II)-based metal-organic nanotubes (Zn-MONTs) were used as an adsorbent for the SPME of nitro-polycyclic aromatic hydrocarbons (NPAHs) at trace levels from environmental water samples. Gas chromatography-mass spectrometry was used for sample analysis and key factors were investigated and optimized. Under optimal parameters, the developed method achieved low limits of detection (1.4-7.3 ng L), wide linear range (10-5000 ng L), and high enrichment factors (1510-17,684). In comparison to the PDMS and DVB/CAR/PDMS fiber for potential commercial use, the Zn-MONTs fiber obtained MS responses 2-9 times as high as those achieved by the commercial 100 µm PDMS and 0.2-2.3 times higher than 50/30 µm DVB/CAR/PDMS fiber did. The proposed method was successfully used in the analysis of NPAHs at trace levels in environmental samples.
金属有机纳米管（MONTs）具有高比表面积、可调孔径、优异的热稳定性和化学稳定性，因此在固相微萃取（SPME）方面具有巨大的潜力。在这项工作中，锌（II）基金属有机纳米管（Zn-MONTs）被用作吸附剂，用于从环境水样中痕量水平萃取硝基多环芳烃（NPAHs）。采用气相色谱-质谱法进行样品分析，并对关键因素进行了考察和优化。在最佳参数下，该方法的检测限低（1.4-7.3ng/L），线性范围宽（10-5000ng/L），富集因子高（1510-17684）。与 PDMS 和 DVB/CAR/PDMS 纤维相比，用于潜在商业用途的纤维，Zn-MONTs 纤维获得的 MS 响应比商用 100μm PDMS 纤维高 2-9 倍，比 50/30μm DVB/CAR/PDMS 纤维高 0.2-2.3 倍。该方法成功地用于痕量环境样品中 NPAHs 的分析。
