Electrophoretic deposition hyphenated with electrochemical anodization for the fabrication of phenyl-functionalized mesoporous silica onto Nitinol fibers for selective solid-phase microextraction of polycyclic aromatic hydrocarbons,Analytical Methods

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Electrophoretic deposition hyphenated with electrochemical anodization for the fabrication of phenyl-functionalized mesoporous silica onto Nitinol fibers for selective solid-phase microextraction of polycyclic aromatic hydrocarbons
Analytical Methods ( IF 2.7 ) Pub Date : 2017-10-30 00:00:00 , DOI: 10.1039/c7ay02183f
Panxia Jin _{1,

2,

3,

4} , Shanshan Zhou _{1,

2,

3,

4} , Huiju Wang _{1,

2,

3,

4} , Ziyi Wang _{1,

2,

3,

4} , Xuemei Wang _{1,

2,

3,

4,

5} , Xinzhen Du _{1,

2,

3,

4,

5}

Affiliation

Electrophoretic deposition (EPD) was hyphenated with electrochemical anodization for the fabrication of phenyl modified mesoporous silica (MPS-Ph) particles onto Nitinol (NiTi) wire as a solid-phase microextraction (SPME) fiber. The anodized NiTi wire offers an ideal conductive fiber substrate with a large available contact surface for subsequent EPD and surface modification of MPS particles. The resulting NiTi-based fiber showed better extraction selectivity and efficiency for polycyclic aromatic hydrocarbons (PAHs) compared with commercial polydimethylsiloxane and polyacrylate fibers. Under optimized conditions for SPME of PAHs, the proposed method presented wide linear ranges from 0.02 to 500 μg L⁻¹ with correlation coefficients higher than 0.999. The limits of detection ranged from 3.6 ng L⁻¹ to 5.2 ng L⁻¹. Relative standard deviations (RSDs) for single fiber repeatability varied from 4.3% to 5.4% for intra-day and inter-day measurements (n = 5), and RSDs for fiber-to-fiber reproducibility from 6.0% to 6.9% (n = 5). Moreover, the resulting fiber was stable for at least 200 extraction and desorption cycles in SPME and was fabricated in a precisely controllable manner. The proposed method was successfully applied to the selective preconcentration and sensitive determination of target PAHs in river water, rain water and wastewater samples with recoveries from 89.4% to 102%.

中文翻译：

电泳沉积与电化学阳极氧化相连，用于在镍钛诺纤维上制备苯基官能化的介孔二氧化硅，以选择性地固相微萃取多环芳烃

电泳沉积（EPD）通过电化学阳极氧化进行连接，以在固相微萃取（SPME）纤维上的镍钛诺（NiTi）线上制备苯基改性的介孔二氧化硅（MPS-Ph）颗粒。阳极氧化镍钛丝提供了理想的导电纤维基材，具有大的可用接触表面，可用于后续的EPD和MPS颗粒的表面改性。与商业化的聚二甲基硅氧烷和聚丙烯酸酯纤维相比，所得的基于NiTi的纤维对多环芳烃（PAHs）表现出更好的萃取选择性和效率。在PAHs SPME的优化条件下，所提出的方法具有0.02至500μgL ^-1的宽线性范围，相关系数高于0.999。检测限为3.6 ng L ^-1至5.2 ng L ^-1。日内和日间测量的单根纤维可重复性的相对标准偏差（RSD）从4.3％到5.4％（n = 5），纤维间重现性的RSDs从6.0％到6.9％（n = 5）。此外，所得纤维在SPME中至少可稳定200个抽提和解吸循环，并以可精确控制的方式进行制造。该方法已成功应用于河流水，雨水和废水样品中目标多环芳烃的选择性预富集和灵敏测定，回收率在89.4％至102％之间。

更新日期：2017-11-15

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