ZIF-67 derived hollow nanomaterials as solid phase microextraction coatings for rapid capture of polycyclic aromatic hydrocarbons from water samples,Environmental Science: Nano

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ZIF-67 derived hollow nanomaterials as solid phase microextraction coatings for rapid capture of polycyclic aromatic hydrocarbons from water samples
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2021-1-9 , DOI: 10.1039/d0en01176b
Xuemei Wang _{1,

2,

3,

4,

5} , Fangbing Wang _{1,

2,

3,

4,

5} , Hong Ji _{1,

2,

3,

4,

5} , Xinglan Cui _{1,

2,

3,

4,

5} , Yacong Liu _{1,

2,

3,

4,

5} , Xinzhen Du _{1,

2,

3,

4,

5} , Xiaoquan Lu _{1,

2,

3,

4,

5}

Affiliation

Zeolitic imidazole framework-67 (ZIF-67) derived hollow nanomaterials (HO-ZIF-67) were prepared by an etching technique of tannic acid and used as solid-phase microextraction (SPME) coatings for rapid capture of polycyclic aromatic hydrocarbons (PAHs). An orthogonal array design (OAD) was designed to find out the optimal extraction conditions. Under the optimized conditions, the HO-ZIF-67 coated fiber exhibited better enrichment performance than the ZIF-67 coated fiber and commercial fibers. Besides, hollow structures can effectively reduce the distance for the transfer of analytes and holes, which accelerated the mass transfer and shortened the adsorption equilibrium time. The method exhibited wide linear ranges (0.01–1000 μg L⁻¹), low detection limits (0.004–2.36 μg L⁻¹), and good reproducibility; the relative standard deviation (RSD) was in the range of 0.4–7.0% and 1.1–7.4% for single fiber and fiber-to-fiber, respectively, and the spiked recoveries at two levels of 20.0 and 50.0 μg L⁻¹ were in the range of 66.70–123.05% with the RSDs less than 7.977%. Finally, the method was applied for the determination of fifteen PAHs from the real water samples with the combination of HPLC successfully.

中文翻译：

ZIF-67衍生的中空纳米材料作为固相微萃取涂层，用于从水样品中快速捕获多环芳烃

通过单宁酸蚀刻技术制备了由沸石咪唑骨架-67（ZIF-67）衍生的中空纳米材料（HO-ZIF-67），并用作固相微萃取（SPME）涂层，用于快速捕获多环芳烃（PAH）。设计了正交阵列设计（OAD）以找出最佳提取条件。在最佳条件下，HO-ZIF-67包覆纤维比ZIF-67包覆纤维和商业纤维表现出更好的富集性能。此外，空心结构可以有效地减少分析物和空穴的转移距离，从而加快了质量转移并缩短了吸附平衡时间。该方法具有宽线性范围（0.01–1000μgL ^-1），低检测限（0.004–2.36μgL ^-1），重现性好；单纤维和纤维间的相对标准偏差（RSD）分别在0.4–7.0％和1.1–7.4％的范围内，加标回收率分别为20.0和50.0μgL ^-1。 RSD小于7.977％的范围为66.70–123.05％。最后，该方法成功地结合了HPLC，用于从实际水样中测定15种多环芳烃。

更新日期：2021-02-05

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