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首页> 外文期刊>Fibers and Polymers >Transparent Polycaprolactam Electrospun Nanofibers Doped with 1,10-phenanthroline Optical Sensor for Colorimetric Determination of Iron (II) and Vitamin C
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Transparent Polycaprolactam Electrospun Nanofibers Doped with 1,10-phenanthroline Optical Sensor for Colorimetric Determination of Iron (II) and Vitamin C

机译：掺杂有1,10菲咯的光学传感器的透明聚己内酰胺电纺纳米纤维，用于比色法测定铁（II）和维生素C.

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摘要

A novel optical chemical sensor based on a transparent electrospun nanofibrous scaffold, composed of polycaprolactam (PA6) and 1,10-phenanthroline (Phen), deposited on a glass slide and impregnated with polyvinyl alcohol (PVA) was coupled with UV-vis spectrophotometry and used for colorimetric determination of ferrous ion (Fe2+) and ascorbic acid (AA). The electrospun nanofibers were characterized using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR) techniques. The main factors affecting performance of the optical sensor (PA6-Phen/PVA@glass) including Phen dosage, pH of sample solution, electrospinning time, polymer solution flowrate, electrospinning voltage, and PVA amount were investigated and the related optimum values were obtained. The analytical merits of the sensor for quantitative determination of Fe2+ and ascorbic acid was evaluated. The limit of detection (LOD) and limit of quantification (LOQ) for Fe2+ were 1 and 3 g mL(-1), respectively. The linear dynamic range (LDR) was 3-150 g mL(-1) with the determination coefficient (R-2) of 0.991. The relative standard deviation (RSD %, n=3) for a solution of 60 g mL(-1) was 5.4 %. For determination of AA, LOD and LOQ were obtained equal to 0.5 and 2 g mL(-1), respectively. The linear dynamic range was in the 2-200 g mL(-1) range with a R2 of 0.994. The RSD % at 100 g mL(-1), n=3) was equal to 7.0 %. The sensor was applied successfully to the detection of Fe(II) and AA in real water samples and aspirin tablets.
机译：基于透明电梭纳米纤维支架的新型光学化学传感器，由沉积在玻璃载玻片上并浸渍聚乙烯醇（PVA）的多己酰胺（PA6）和1,10-菲林（Phen）组成，与UV-Vis分光光度法偶联用于比色含有亚铁离子（Fe2 +）和抗坏血酸（AA）的测定。使用扫描电子显微镜（SEM）和傅里叶变换红外光谱（FT-IR）技术表征了电纺纳米纤维。研究了影响包括Phot剂量，样品溶液，静电纺丝时间，聚合物溶液流量，静电纺丝电压和PVA量的PAP剂量，pH的pH的性能的主要因素，得到了相关的最佳值。评估了用于定量测定Fe2 +和抗坏血酸的传感器的分析优点。 Fe2 +的检测极限（LOD）和定量极限（LOQ）分别为1和3g mL（-1）。线性动态范围（LDR）为3-150克朗（-1），测定系数（R-2）为0.991。 60g mL（-1）溶液的相对标准偏差（RSD％，N = 3）为5.4％。为了测定AA，LOD和LOQ分别等于0.5和2g mL（-1）。线性动态范围位于2-200g ml（-1）范围内，R2为0.994。 100g ml（-1），n = 3）的RSD％等于7.0％。该传感器成功地应用于真正水样和阿司匹林片中的Fe（II）和AA的检测。

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